Finding the Fourth Proportional to 1,016.86, 1,523.22 and 863.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.86 : 1,523.22 = 863.08 : x
2. Step 2: Convert to fraction form
   1,016.86/1,523.22 = 863.08/x
3. Step 3: Cross multiply
   1,016.86x = 1,523.22 × 863.08
4. Step 4: Simplify right side
   1,016.86x = 1,314,660.72
5. Step 5: Solve for x
   x = 1,314,660.72/1,016.86
6. Step 6: Final answer
   x = 1,292.86