Finding the Fourth Proportional to 863,105.78, 1,191,086.06 and 481,132.56

Step by Step Solution

1. Step 1: Write the proportion equation
   863,105.78 : 1,191,086.06 = 481,132.56 : x
2. Step 2: Convert to fraction form
   863,105.78/1,191,086.06 = 481,132.56/x
3. Step 3: Cross multiply
   863,105.78x = 1,191,086.06 × 481,132.56
4. Step 4: Simplify right side
   863,105.78x = 573,070,285,228.11
5. Step 5: Solve for x
   x = 573,070,285,228.11/863,105.78
6. Step 6: Final answer
   x = 663,962.98