Finding the Fourth Proportional to 2,357.75, 3,540.27 and 2,142.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,357.75 : 3,540.27 = 2,142.69 : x
2. Step 2: Convert to fraction form
   2,357.75/3,540.27 = 2,142.69/x
3. Step 3: Cross multiply
   2,357.75x = 3,540.27 × 2,142.69
4. Step 4: Simplify right side
   2,357.75x = 7,585,701.13
5. Step 5: Solve for x
   x = 7,585,701.13/2,357.75
6. Step 6: Final answer
   x = 3,217.35