Finding the Fourth Proportional to 1,250.68, 1,724.78 and 857.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,250.68 : 1,724.78 = 857.82 : x
2. Step 2: Convert to fraction form
   1,250.68/1,724.78 = 857.82/x
3. Step 3: Cross multiply
   1,250.68x = 1,724.78 × 857.82
4. Step 4: Simplify right side
   1,250.68x = 1,479,550.78
5. Step 5: Solve for x
   x = 1,479,550.78/1,250.68
6. Step 6: Final answer
   x = 1,183.00