Finding the Fourth Proportional to 2,610.44, 3,916.17 and 761.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,610.44 : 3,916.17 = 761.57 : x
2. Step 2: Convert to fraction form
   2,610.44/3,916.17 = 761.57/x
3. Step 3: Cross multiply
   2,610.44x = 3,916.17 × 761.57
4. Step 4: Simplify right side
   2,610.44x = 2,982,434.83
5. Step 5: Solve for x
   x = 2,982,434.83/2,610.44
6. Step 6: Final answer
   x = 1,142.50