Finding the Fourth Proportional to 942,718.38, 1,300,978.71 and 513,026.25

Step by Step Solution

1. Step 1: Write the proportion equation
   942,718.38 : 1,300,978.71 = 513,026.25 : x
2. Step 2: Convert to fraction form
   942,718.38/1,300,978.71 = 513,026.25/x
3. Step 3: Cross multiply
   942,718.38x = 1,300,978.71 × 513,026.25
4. Step 4: Simplify right side
   942,718.38x = 667,436,228,921.14
5. Step 5: Solve for x
   x = 667,436,228,921.14/942,718.38
6. Step 6: Final answer
   x = 707,991.11