How to shear a ellipse I am working on a scientiic illustration and I need your help. :)

I want to make an ellipse with left end at (0, 0 , 0) and the right end at (1, 1, 1) where the middle point is at (0.5, 0.5, 0.5). All I have to do is to shear the ellipse shown in the figure in such a way that right end should be at (1,1,1) and the middle point at (0.5, 0.5, 0.5) and left end remain at zero. 

How to shear it....?



I tried propotional editing by moving the right end vertice point but it gives non symmetrical ellipse.
Here are two ways to do it: Shear tool or Mesh Deform modifier