Finding the Fourth Proportional to 2,609.69, 3,915.38 and 966.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,609.69 : 3,915.38 = 966.35 : x
2. Step 2: Convert to fraction form
   2,609.69/3,915.38 = 966.35/x
3. Step 3: Cross multiply
   2,609.69x = 3,915.38 × 966.35
4. Step 4: Simplify right side
   2,609.69x = 3,783,639.67
5. Step 5: Solve for x
   x = 3,783,639.67/2,609.69
6. Step 6: Final answer
   x = 1,449.85