Finding the Fourth Proportional to 2,086.42, 2,879.11 and 1,142.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.42 : 2,879.11 = 1,142.01 : x
2. Step 2: Convert to fraction form
   2,086.42/2,879.11 = 1,142.01/x
3. Step 3: Cross multiply
   2,086.42x = 2,879.11 × 1,142.01
4. Step 4: Simplify right side
   2,086.42x = 3,287,952.31
5. Step 5: Solve for x
   x = 3,287,952.31/2,086.42
6. Step 6: Final answer
   x = 1,575.88