Finding the Fourth Proportional to 2,144.88, 2,959.56 and 1,260.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.88 : 2,959.56 = 1,260.36 : x
2. Step 2: Convert to fraction form
   2,144.88/2,959.56 = 1,260.36/x
3. Step 3: Cross multiply
   2,144.88x = 2,959.56 × 1,260.36
4. Step 4: Simplify right side
   2,144.88x = 3,730,111.04
5. Step 5: Solve for x
   x = 3,730,111.04/2,144.88
6. Step 6: Final answer
   x = 1,739.08