Finding the Fourth Proportional to 2,662.52, 3,995.56 and 931.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,662.52 : 3,995.56 = 931.15 : x
2. Step 2: Convert to fraction form
   2,662.52/3,995.56 = 931.15/x
3. Step 3: Cross multiply
   2,662.52x = 3,995.56 × 931.15
4. Step 4: Simplify right side
   2,662.52x = 3,720,456.87
5. Step 5: Solve for x
   x = 3,720,456.87/2,662.52
6. Step 6: Final answer
   x = 1,397.34