Finding the Fourth Proportional to 2,440.50, 3,660.91 and 959.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,440.50 : 3,660.91 = 959.60 : x
2. Step 2: Convert to fraction form
   2,440.50/3,660.91 = 959.60/x
3. Step 3: Cross multiply
   2,440.50x = 3,660.91 × 959.60
4. Step 4: Simplify right side
   2,440.50x = 3,513,019.91
5. Step 5: Solve for x
   x = 3,513,019.91/2,440.50
6. Step 6: Final answer
   x = 1,439.47