Finding the Fourth Proportional to 931,456.04, 1,285,516.46 and 518,034.78

Step by Step Solution

1. Step 1: Write the proportion equation
   931,456.04 : 1,285,516.46 = 518,034.78 : x
2. Step 2: Convert to fraction form
   931,456.04/1,285,516.46 = 518,034.78/x
3. Step 3: Cross multiply
   931,456.04x = 1,285,516.46 × 518,034.78
4. Step 4: Simplify right side
   931,456.04x = 665,942,233,952.31
5. Step 5: Solve for x
   x = 665,942,233,952.31/931,456.04
6. Step 6: Final answer
   x = 714,947.58