Finding the Fourth Proportional to 2,275.48, 3,414.54 and 959.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,275.48 : 3,414.54 = 959.15 : x
2. Step 2: Convert to fraction form
   2,275.48/3,414.54 = 959.15/x
3. Step 3: Cross multiply
   2,275.48x = 3,414.54 × 959.15
4. Step 4: Simplify right side
   2,275.48x = 3,275,049.47
5. Step 5: Solve for x
   x = 3,275,049.47/2,275.48
6. Step 6: Final answer
   x = 1,439.28