Finding the Fourth Proportional to 864,404.72, 1,191,450.78 and 577,820.24

Step by Step Solution

1. Step 1: Write the proportion equation
   864,404.72 : 1,191,450.78 = 577,820.24 : x
2. Step 2: Convert to fraction form
   864,404.72/1,191,450.78 = 577,820.24/x
3. Step 3: Cross multiply
   864,404.72x = 1,191,450.78 × 577,820.24
4. Step 4: Simplify right side
   864,404.72x = 688,444,375,647.79
5. Step 5: Solve for x
   x = 688,444,375,647.79/864,404.72
6. Step 6: Final answer
   x = 796,437.55