Finding the Fourth Proportional to 957,380.80, 1,321,131.60 and 527,659.52

Step by Step Solution

1. Step 1: Write the proportion equation
   957,380.80 : 1,321,131.60 = 527,659.52 : x
2. Step 2: Convert to fraction form
   957,380.80/1,321,131.60 = 527,659.52/x
3. Step 3: Cross multiply
   957,380.80x = 1,321,131.60 × 527,659.52
4. Step 4: Simplify right side
   957,380.80x = 697,107,665,912.83
5. Step 5: Solve for x
   x = 697,107,665,912.83/957,380.80
6. Step 6: Final answer
   x = 728,140.43