Finding the Fourth Proportional to 1,008,155.16, 1,391,253.37 and 555,446.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,008,155.16 : 1,391,253.37 = 555,446.16 : x
2. Step 2: Convert to fraction form
   1,008,155.16/1,391,253.37 = 555,446.16/x
3. Step 3: Cross multiply
   1,008,155.16x = 1,391,253.37 × 555,446.16
4. Step 4: Simplify right side
   1,008,155.16x = 772,766,340,564.94
5. Step 5: Solve for x
   x = 772,766,340,564.94/1,008,155.16
6. Step 6: Final answer
   x = 766,515.29