Finding the Fourth Proportional to 2,610.83, 3,915.54 and 761.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,610.83 : 3,915.54 = 761.47 : x
2. Step 2: Convert to fraction form
   2,610.83/3,915.54 = 761.47/x
3. Step 3: Cross multiply
   2,610.83x = 3,915.54 × 761.47
4. Step 4: Simplify right side
   2,610.83x = 2,981,556.45
5. Step 5: Solve for x
   x = 2,981,556.45/2,610.83
6. Step 6: Final answer
   x = 1,141.99