Finding the Fourth Proportional to 2,086.92, 2,879.94 and 1,142.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.92 : 2,879.94 = 1,142.73 : x
2. Step 2: Convert to fraction form
   2,086.92/2,879.94 = 1,142.73/x
3. Step 3: Cross multiply
   2,086.92x = 2,879.94 × 1,142.73
4. Step 4: Simplify right side
   2,086.92x = 3,290,993.84
5. Step 5: Solve for x
   x = 3,290,993.84/2,086.92
6. Step 6: Final answer
   x = 1,576.96