Finding the Fourth Proportional to 2,456.95, 3,668.22 and 2,159.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,456.95 : 3,668.22 = 2,159.40 : x
2. Step 2: Convert to fraction form
   2,456.95/3,668.22 = 2,159.40/x
3. Step 3: Cross multiply
   2,456.95x = 3,668.22 × 2,159.40
4. Step 4: Simplify right side
   2,456.95x = 7,921,154.27
5. Step 5: Solve for x
   x = 7,921,154.27/2,456.95
6. Step 6: Final answer
   x = 3,223.98