Finding the Fourth Proportional to 2,144.52, 2,959.92 and 1,397.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.52 : 2,959.92 = 1,397.16 : x
2. Step 2: Convert to fraction form
   2,144.52/2,959.92 = 1,397.16/x
3. Step 3: Cross multiply
   2,144.52x = 2,959.92 × 1,397.16
4. Step 4: Simplify right side
   2,144.52x = 4,135,481.83
5. Step 5: Solve for x
   x = 4,135,481.83/2,144.52
6. Step 6: Final answer
   x = 1,928.40