Finding the Fourth Proportional to 1,513.27, 2,268.24 and 862.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,513.27 : 2,268.24 = 862.57 : x
2. Step 2: Convert to fraction form
   1,513.27/2,268.24 = 862.57/x
3. Step 3: Cross multiply
   1,513.27x = 2,268.24 × 862.57
4. Step 4: Simplify right side
   1,513.27x = 1,956,515.78
5. Step 5: Solve for x
   x = 1,956,515.78/1,513.27
6. Step 6: Final answer
   x = 1,292.91