Finding the Fourth Proportional to 2,155,131.98, 3,231,761.05 and 617,788.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155,131.98 : 3,231,761.05 = 617,788.83 : x
2. Step 2: Convert to fraction form
   2,155,131.98/3,231,761.05 = 617,788.83/x
3. Step 3: Cross multiply
   2,155,131.98x = 3,231,761.05 × 617,788.83
4. Step 4: Simplify right side
   2,155,131.98x = 1,996,545,877,919.07
5. Step 5: Solve for x
   x = 1,996,545,877,919.07/2,155,131.98
6. Step 6: Final answer
   x = 926,414.67