Finding the Fourth Proportional to 2,610.48, 3,915.55 and 761.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,610.48 : 3,915.55 = 761.54 : x
2. Step 2: Convert to fraction form
   2,610.48/3,915.55 = 761.54/x
3. Step 3: Cross multiply
   2,610.48x = 3,915.55 × 761.54
4. Step 4: Simplify right side
   2,610.48x = 2,981,844.14
5. Step 5: Solve for x
   x = 2,981,844.14/2,610.48
6. Step 6: Final answer
   x = 1,142.26