title: Running / Cumulative Total in DAX using only measures, no calculated columns
body: <p>Problem:</p>
  <p>Create a running total measure that does not reference any calculated columns, only measures.</p>
  <p>One measure is a calculation.
  Another measure is auto-incrementing IDs created from a RANKX.</p>
  <p>The goal is to create a running total measure/sum for A using reference only to B.</p>
  <p>Context:
  For data restriction reasons, there is no ability to add a calculated column. Therefore, there are a number of measures that have been created.</p>
  <p>Existing trials:</p>
  <p>Existing knowledge base (internet searches) only seem to refer to measures where there is a mixture of columns and measures. There is no ability to add calculated columns, however, nor need for/use of existing columns within this particular running total.</p>
  <p>Currently there has been an attempt to use a table expression to build the table with the measures, creating additional variables for a max (MAXX) and trying to filter this way and use a CAlCULATE in the return. This is only returning the total and not a running total.</p>
  <p>Edit:</p>
  <p>Example table:</p>
  <div class="s-table-container">
  <table class="s-table">
  <thead>
  <tr>
  <th>[...existing cols]</th>
  <th>Measure A</th>
  <th>Measure B</th>
  <th>(Needed) Measure C</th>
  </tr>
  </thead>
  <tbody>
  <tr>
  <td>...</td>
  <td>10</td>
  <td>1</td>
  <td>10</td>
  </tr>
  <tr>
  <td>...</td>
  <td>60</td>
  <td>2</td>
  <td>70</td>
  </tr>
  <tr>
  <td>...</td>
  <td>40</td>
  <td>3</td>
  <td>110</td>
  </tr>
  </tbody>
  </table>
  </div>
  <p>Measure A is a sum of other measures
  Measure B is a rank of other measures
  Measure C is a running total of measure A given Measure B</p>