Finding the Fourth Proportional to 2,604.86, 3,904.88 and 960.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,604.86 : 3,904.88 = 960.15 : x
2. Step 2: Convert to fraction form
   2,604.86/3,904.88 = 960.15/x
3. Step 3: Cross multiply
   2,604.86x = 3,904.88 × 960.15
4. Step 4: Simplify right side
   2,604.86x = 3,749,265.73
5. Step 5: Solve for x
   x = 3,749,265.73/2,604.86
6. Step 6: Final answer
   x = 1,439.34