Finding the Fourth Proportional to 2,425.71, 3,639.94 and 964.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,425.71 : 3,639.94 = 964.98 : x
2. Step 2: Convert to fraction form
   2,425.71/3,639.94 = 964.98/x
3. Step 3: Cross multiply
   2,425.71x = 3,639.94 × 964.98
4. Step 4: Simplify right side
   2,425.71x = 3,512,466.89
5. Step 5: Solve for x
   x = 3,512,466.89/2,425.71
6. Step 6: Final answer
   x = 1,448.01