Finding the Fourth Proportional to 2,715.62, 4,073.22 and 960.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,715.62 : 4,073.22 = 960.71 : x
2. Step 2: Convert to fraction form
   2,715.62/4,073.22 = 960.71/x
3. Step 3: Cross multiply
   2,715.62x = 4,073.22 × 960.71
4. Step 4: Simplify right side
   2,715.62x = 3,913,162.82
5. Step 5: Solve for x
   x = 3,913,162.82/2,715.62
6. Step 6: Final answer
   x = 1,440.99