Finding the Fourth Proportional to 820,131.36, 1,131,781.98 and 457,555.29

Step by Step Solution

1. Step 1: Write the proportion equation
   820,131.36 : 1,131,781.98 = 457,555.29 : x
2. Step 2: Convert to fraction form
   820,131.36/1,131,781.98 = 457,555.29/x
3. Step 3: Cross multiply
   820,131.36x = 1,131,781.98 × 457,555.29
4. Step 4: Simplify right side
   820,131.36x = 517,852,832,075.67
5. Step 5: Solve for x
   x = 517,852,832,075.67/820,131.36
6. Step 6: Final answer
   x = 631,426.69