Finding the Fourth Proportional to 839,443.18, 1,158,397.86 and 457,461.76

Step by Step Solution

1. Step 1: Write the proportion equation
   839,443.18 : 1,158,397.86 = 457,461.76 : x
2. Step 2: Convert to fraction form
   839,443.18/1,158,397.86 = 457,461.76/x
3. Step 3: Cross multiply
   839,443.18x = 1,158,397.86 × 457,461.76
4. Step 4: Simplify right side
   839,443.18x = 529,922,723,815.83
5. Step 5: Solve for x
   x = 529,922,723,815.83/839,443.18
6. Step 6: Final answer
   x = 631,278.85