Finding the Fourth Proportional to 2,540.34, 3,810.92 and 691.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,540.34 : 3,810.92 = 691.52 : x
2. Step 2: Convert to fraction form
   2,540.34/3,810.92 = 691.52/x
3. Step 3: Cross multiply
   2,540.34x = 3,810.92 × 691.52
4. Step 4: Simplify right side
   2,540.34x = 2,635,304.89
5. Step 5: Solve for x
   x = 2,635,304.89/2,540.34
6. Step 6: Final answer
   x = 1,037.38