Finding the Fourth Proportional to 2,144.94, 2,959.90 and 1,260.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.94 : 2,959.90 = 1,260.42 : x
2. Step 2: Convert to fraction form
   2,144.94/2,959.90 = 1,260.42/x
3. Step 3: Cross multiply
   2,144.94x = 2,959.90 × 1,260.42
4. Step 4: Simplify right side
   2,144.94x = 3,730,714.01
5. Step 5: Solve for x
   x = 3,730,714.01/2,144.94
6. Step 6: Final answer
   x = 1,739.31