Finding the Fourth Proportional to 726,229.80, 1,002,182.72 and 403,932.96

Step by Step Solution

1. Step 1: Write the proportion equation
   726,229.80 : 1,002,182.72 = 403,932.96 : x
2. Step 2: Convert to fraction form
   726,229.80/1,002,182.72 = 403,932.96/x
3. Step 3: Cross multiply
   726,229.80x = 1,002,182.72 × 403,932.96
4. Step 4: Simplify right side
   726,229.80x = 404,814,632,550.45
5. Step 5: Solve for x
   x = 404,814,632,550.45/726,229.80
6. Step 6: Final answer
   x = 557,419.47