Finding the Fourth Proportional to 2,086.48, 2,879.32 and 1,142.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.48 : 2,879.32 = 1,142.29 : x
2. Step 2: Convert to fraction form
   2,086.48/2,879.32 = 1,142.29/x
3. Step 3: Cross multiply
   2,086.48x = 2,879.32 × 1,142.29
4. Step 4: Simplify right side
   2,086.48x = 3,289,018.44
5. Step 5: Solve for x
   x = 3,289,018.44/2,086.48
6. Step 6: Final answer
   x = 1,576.35