Finding the Fourth Proportional to 963.89, 1,328.16 and 742.15

Step by Step Solution

1. Step 1: Write the proportion equation
   963.89 : 1,328.16 = 742.15 : x
2. Step 2: Convert to fraction form
   963.89/1,328.16 = 742.15/x
3. Step 3: Cross multiply
   963.89x = 1,328.16 × 742.15
4. Step 4: Simplify right side
   963.89x = 985,693.94
5. Step 5: Solve for x
   x = 985,693.94/963.89
6. Step 6: Final answer
   x = 1,022.62