Finding the Fourth Proportional to 946,196.10, 1,305,781.56 and 516,499.20

Step by Step Solution

1. Step 1: Write the proportion equation
   946,196.10 : 1,305,781.56 = 516,499.20 : x
2. Step 2: Convert to fraction form
   946,196.10/1,305,781.56 = 516,499.20/x
3. Step 3: Cross multiply
   946,196.10x = 1,305,781.56 × 516,499.20
4. Step 4: Simplify right side
   946,196.10x = 674,435,131,114.75
5. Step 5: Solve for x
   x = 674,435,131,114.75/946,196.10
6. Step 6: Final answer
   x = 712,785.79