Finding the Fourth Proportional to 963.50, 1,443.42 and 768.89

Step by Step Solution

1. Step 1: Write the proportion equation
   963.50 : 1,443.42 = 768.89 : x
2. Step 2: Convert to fraction form
   963.50/1,443.42 = 768.89/x
3. Step 3: Cross multiply
   963.50x = 1,443.42 × 768.89
4. Step 4: Simplify right side
   963.50x = 1,109,831.20
5. Step 5: Solve for x
   x = 1,109,831.20/963.50
6. Step 6: Final answer
   x = 1,151.87