Finding the Fourth Proportional to 1,111.32, 1,535.04 and 963.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.32 : 1,535.04 = 963.90 : x
2. Step 2: Convert to fraction form
   1,111.32/1,535.04 = 963.90/x
3. Step 3: Cross multiply
   1,111.32x = 1,535.04 × 963.90
4. Step 4: Simplify right side
   1,111.32x = 1,479,625.06
5. Step 5: Solve for x
   x = 1,479,625.06/1,111.32
6. Step 6: Final answer
   x = 1,331.41