Finding the Fourth Proportional to 1,255.68, 1,731.98 and 862.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,255.68 : 1,731.98 = 862.02 : x
2. Step 2: Convert to fraction form
   1,255.68/1,731.98 = 862.02/x
3. Step 3: Cross multiply
   1,255.68x = 1,731.98 × 862.02
4. Step 4: Simplify right side
   1,255.68x = 1,493,003.55
5. Step 5: Solve for x
   x = 1,493,003.55/1,255.68
6. Step 6: Final answer
   x = 1,189.00