Finding the Fourth Proportional to 2,610.18, 3,915.45 and 761.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,610.18 : 3,915.45 = 761.27 : x
2. Step 2: Convert to fraction form
   2,610.18/3,915.45 = 761.27/x
3. Step 3: Cross multiply
   2,610.18x = 3,915.45 × 761.27
4. Step 4: Simplify right side
   2,610.18x = 2,980,695.04
5. Step 5: Solve for x
   x = 2,980,695.04/2,610.18
6. Step 6: Final answer
   x = 1,141.95