Finding the Fourth Proportional to 864,399.72, 1,191,443.88 and 577,815.24

Step by Step Solution

1. Step 1: Write the proportion equation
   864,399.72 : 1,191,443.88 = 577,815.24 : x
2. Step 2: Convert to fraction form
   864,399.72/1,191,443.88 = 577,815.24/x
3. Step 3: Cross multiply
   864,399.72x = 1,191,443.88 × 577,815.24
4. Step 4: Simplify right side
   864,399.72x = 688,434,431,468.73
5. Step 5: Solve for x
   x = 688,434,431,468.73/864,399.72
6. Step 6: Final answer
   x = 796,430.65