Finding the Fourth Proportional to 2,426.29, 3,639.23 and 965.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,426.29 : 3,639.23 = 965.05 : x
2. Step 2: Convert to fraction form
   2,426.29/3,639.23 = 965.05/x
3. Step 3: Cross multiply
   2,426.29x = 3,639.23 × 965.05
4. Step 4: Simplify right side
   2,426.29x = 3,512,038.91
5. Step 5: Solve for x
   x = 3,512,038.91/2,426.29
6. Step 6: Final answer
   x = 1,447.49