Finding the Fourth Proportional to 726,131.50, 1,002,089.12 and 403,864.90

Step by Step Solution

1. Step 1: Write the proportion equation
   726,131.50 : 1,002,089.12 = 403,864.90 : x
2. Step 2: Convert to fraction form
   726,131.50/1,002,089.12 = 403,864.90/x
3. Step 3: Cross multiply
   726,131.50x = 1,002,089.12 × 403,864.90
4. Step 4: Simplify right side
   726,131.50x = 404,708,622,239.89
5. Step 5: Solve for x
   x = 404,708,622,239.89/726,131.50
6. Step 6: Final answer
   x = 557,348.94