Finding the Fourth Proportional to 2,426.79, 3,639.98 and 965.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,426.79 : 3,639.98 = 965.55 : x
2. Step 2: Convert to fraction form
   2,426.79/3,639.98 = 965.55/x
3. Step 3: Cross multiply
   2,426.79x = 3,639.98 × 965.55
4. Step 4: Simplify right side
   2,426.79x = 3,514,582.69
5. Step 5: Solve for x
   x = 3,514,582.69/2,426.79
6. Step 6: Final answer
   x = 1,448.24