Finding the Fourth Proportional to 1,112.27, 1,535.52 and 863.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.27 : 1,535.52 = 863.03 : x
2. Step 2: Convert to fraction form
   1,112.27/1,535.52 = 863.03/x
3. Step 3: Cross multiply
   1,112.27x = 1,535.52 × 863.03
4. Step 4: Simplify right side
   1,112.27x = 1,325,199.83
5. Step 5: Solve for x
   x = 1,325,199.83/1,112.27
6. Step 6: Final answer
   x = 1,191.44