Finding the Fourth Proportional to 782,664.32, 1,080,245.72 and 476,840.72

Step by Step Solution

1. Step 1: Write the proportion equation
   782,664.32 : 1,080,245.72 = 476,840.72 : x
2. Step 2: Convert to fraction form
   782,664.32/1,080,245.72 = 476,840.72/x
3. Step 3: Cross multiply
   782,664.32x = 1,080,245.72 × 476,840.72
4. Step 4: Simplify right side
   782,664.32x = 515,105,146,901.72
5. Step 5: Solve for x
   x = 515,105,146,901.72/782,664.32
6. Step 6: Final answer
   x = 658,143.13