Finding the Fourth Proportional to 2,960.18, 4,440.35 and 768.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,960.18 : 4,440.35 = 768.86 : x
2. Step 2: Convert to fraction form
   2,960.18/4,440.35 = 768.86/x
3. Step 3: Cross multiply
   2,960.18x = 4,440.35 × 768.86
4. Step 4: Simplify right side
   2,960.18x = 3,414,007.50
5. Step 5: Solve for x
   x = 3,414,007.50/2,960.18
6. Step 6: Final answer
   x = 1,153.31