Finding the Fourth Proportional to 2,086.94, 2,879.95 and 1,142.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.94 : 2,879.95 = 1,142.72 : x
2. Step 2: Convert to fraction form
   2,086.94/2,879.95 = 1,142.72/x
3. Step 3: Cross multiply
   2,086.94x = 2,879.95 × 1,142.72
4. Step 4: Simplify right side
   2,086.94x = 3,290,976.46
5. Step 5: Solve for x
   x = 3,290,976.46/2,086.94
6. Step 6: Final answer
   x = 1,576.94