Finding the Fourth Proportional to 2,086.29, 2,879.12 and 1,142.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.29 : 2,879.12 = 1,142.12 : x
2. Step 2: Convert to fraction form
   2,086.29/2,879.12 = 1,142.12/x
3. Step 3: Cross multiply
   2,086.29x = 2,879.12 × 1,142.12
4. Step 4: Simplify right side
   2,086.29x = 3,288,302.49
5. Step 5: Solve for x
   x = 3,288,302.49/2,086.29
6. Step 6: Final answer
   x = 1,576.15