Finding the Fourth Proportional to 2,086.73, 2,879.67 and 1,142.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.73 : 2,879.67 = 1,142.54 : x
2. Step 2: Convert to fraction form
   2,086.73/2,879.67 = 1,142.54/x
3. Step 3: Cross multiply
   2,086.73x = 2,879.67 × 1,142.54
4. Step 4: Simplify right side
   2,086.73x = 3,290,138.16
5. Step 5: Solve for x
   x = 3,290,138.16/2,086.73
6. Step 6: Final answer
   x = 1,576.70