Finding the Fourth Proportional to 820,185.54, 1,131,854.47 and 457,587.82

Step by Step Solution

1. Step 1: Write the proportion equation
   820,185.54 : 1,131,854.47 = 457,587.82 : x
2. Step 2: Convert to fraction form
   820,185.54/1,131,854.47 = 457,587.82/x
3. Step 3: Cross multiply
   820,185.54x = 1,131,854.47 × 457,587.82
4. Step 4: Simplify right side
   820,185.54x = 517,922,819,484.56
5. Step 5: Solve for x
   x = 517,922,819,484.56/820,185.54
6. Step 6: Final answer
   x = 631,470.31