Finding the Fourth Proportional to 2,391.38, 3,601.06 and 2,086.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,391.38 : 3,601.06 = 2,086.88 : x
2. Step 2: Convert to fraction form
   2,391.38/3,601.06 = 2,086.88/x
3. Step 3: Cross multiply
   2,391.38x = 3,601.06 × 2,086.88
4. Step 4: Simplify right side
   2,391.38x = 7,514,969.66
5. Step 5: Solve for x
   x = 7,514,969.66/2,391.38
6. Step 6: Final answer
   x = 3,142.52