Finding the Fourth Proportional to 1,015.68, 1,402.32 and 963.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015.68 : 1,402.32 = 963.72 : x
2. Step 2: Convert to fraction form
   1,015.68/1,402.32 = 963.72/x
3. Step 3: Cross multiply
   1,015.68x = 1,402.32 × 963.72
4. Step 4: Simplify right side
   1,015.68x = 1,351,443.83
5. Step 5: Solve for x
   x = 1,351,443.83/1,015.68
6. Step 6: Final answer
   x = 1,330.58