Finding the Fourth Proportional to 2,086.50, 2,879.25 and 1,142.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.50 : 2,879.25 = 1,142.29 : x
2. Step 2: Convert to fraction form
   2,086.50/2,879.25 = 1,142.29/x
3. Step 3: Cross multiply
   2,086.50x = 2,879.25 × 1,142.29
4. Step 4: Simplify right side
   2,086.50x = 3,288,938.48
5. Step 5: Solve for x
   x = 3,288,938.48/2,086.50
6. Step 6: Final answer
   x = 1,576.29