Finding the Fourth Proportional to 1,150.61, 1,724.29 and 862.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.61 : 1,724.29 = 862.25 : x
2. Step 2: Convert to fraction form
   1,150.61/1,724.29 = 862.25/x
3. Step 3: Cross multiply
   1,150.61x = 1,724.29 × 862.25
4. Step 4: Simplify right side
   1,150.61x = 1,486,758.28
5. Step 5: Solve for x
   x = 1,486,758.28/1,150.61
6. Step 6: Final answer
   x = 1,292.15