Finding the Fourth Proportional to 2,426.54, 3,639.61 and 965.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,426.54 : 3,639.61 = 965.30 : x
2. Step 2: Convert to fraction form
   2,426.54/3,639.61 = 965.30/x
3. Step 3: Cross multiply
   2,426.54x = 3,639.61 × 965.30
4. Step 4: Simplify right side
   2,426.54x = 3,513,315.53
5. Step 5: Solve for x
   x = 3,513,315.53/2,426.54
6. Step 6: Final answer
   x = 1,447.87