Finding the Fourth Proportional to 2,144.11, 2,958.78 and 1,260.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.11 : 2,958.78 = 1,260.01 : x
2. Step 2: Convert to fraction form
   2,144.11/2,958.78 = 1,260.01/x
3. Step 3: Cross multiply
   2,144.11x = 2,958.78 × 1,260.01
4. Step 4: Simplify right side
   2,144.11x = 3,728,092.39
5. Step 5: Solve for x
   x = 3,728,092.39/2,144.11
6. Step 6: Final answer
   x = 1,738.76