Finding the Fourth Proportional to 819,933.30, 1,131,509.61 and 457,347.83

Step by Step Solution

1. Step 1: Write the proportion equation
   819,933.30 : 1,131,509.61 = 457,347.83 : x
2. Step 2: Convert to fraction form
   819,933.30/1,131,509.61 = 457,347.83/x
3. Step 3: Cross multiply
   819,933.30x = 1,131,509.61 × 457,347.83
4. Step 4: Simplify right side
   819,933.30x = 517,493,459,100.10
5. Step 5: Solve for x
   x = 517,493,459,100.10/819,933.30
6. Step 6: Final answer
   x = 631,140.92