Finding the Fourth Proportional to 2,440.54, 3,661.34 and 959.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,440.54 : 3,661.34 = 959.90 : x
2. Step 2: Convert to fraction form
   2,440.54/3,661.34 = 959.90/x
3. Step 3: Cross multiply
   2,440.54x = 3,661.34 × 959.90
4. Step 4: Simplify right side
   2,440.54x = 3,514,520.27
5. Step 5: Solve for x
   x = 3,514,520.27/2,440.54
6. Step 6: Final answer
   x = 1,440.06