Finding the Fourth Proportional to 3,085.18, 4,258.94 and 2,144.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,085.18 : 4,258.94 = 2,144.15 : x
2. Step 2: Convert to fraction form
   3,085.18/4,258.94 = 2,144.15/x
3. Step 3: Cross multiply
   3,085.18x = 4,258.94 × 2,144.15
4. Step 4: Simplify right side
   3,085.18x = 9,131,806.20
5. Step 5: Solve for x
   x = 9,131,806.20/3,085.18
6. Step 6: Final answer
   x = 2,959.89