In this task, you will be given a list of numbers. The goal is to divide all the numbers in the list by a constant such that the sum of the resulting list is 1. The output should be rounded to 3 decimals.
[-49.991, -59.385, 94.427, -98.366, 243.052, 195.326, 139.6, 48.627, -92.948, -96.031]