Finding the Fourth Proportional to 1,456.78, 2,008.76 and 1,268.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,456.78 : 2,008.76 = 1,268.59 : x
2. Step 2: Convert to fraction form
   1,456.78/2,008.76 = 1,268.59/x
3. Step 3: Cross multiply
   1,456.78x = 2,008.76 × 1,268.59
4. Step 4: Simplify right side
   1,456.78x = 2,548,292.85
5. Step 5: Solve for x
   x = 2,548,292.85/1,456.78
6. Step 6: Final answer
   x = 1,749.26