Finding the Fourth Proportional to 2,662.71, 3,995.84 and 931.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,662.71 : 3,995.84 = 931.34 : x
2. Step 2: Convert to fraction form
   2,662.71/3,995.84 = 931.34/x
3. Step 3: Cross multiply
   2,662.71x = 3,995.84 × 931.34
4. Step 4: Simplify right side
   2,662.71x = 3,721,467.97
5. Step 5: Solve for x
   x = 3,721,467.97/2,662.71
6. Step 6: Final answer
   x = 1,397.62