Finding the Fourth Proportional to 820,077.30, 1,131,707.15 and 457,501.15

Step by Step Solution

1. Step 1: Write the proportion equation
   820,077.30 : 1,131,707.15 = 457,501.15 : x
2. Step 2: Convert to fraction form
   820,077.30/1,131,707.15 = 457,501.15/x
3. Step 3: Cross multiply
   820,077.30x = 1,131,707.15 × 457,501.15
4. Step 4: Simplify right side
   820,077.30x = 517,757,322,588.22
5. Step 5: Solve for x
   x = 517,757,322,588.22/820,077.30
6. Step 6: Final answer
   x = 631,351.85