Finding the Fourth Proportional to 947,510.56, 1,307,581.68 and 517,808.80

Step by Step Solution

1. Step 1: Write the proportion equation
   947,510.56 : 1,307,581.68 = 517,808.80 : x
2. Step 2: Convert to fraction form
   947,510.56/1,307,581.68 = 517,808.80/x
3. Step 3: Cross multiply
   947,510.56x = 1,307,581.68 × 517,808.80
4. Step 4: Simplify right side
   947,510.56x = 677,077,300,622.78
5. Step 5: Solve for x
   x = 677,077,300,622.78/947,510.56
6. Step 6: Final answer
   x = 714,585.49