Finding the Fourth Proportional to 2,717.27, 4,076.61 and 1,257.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,717.27 : 4,076.61 = 1,257.47 : x
2. Step 2: Convert to fraction form
   2,717.27/4,076.61 = 1,257.47/x
3. Step 3: Cross multiply
   2,717.27x = 4,076.61 × 1,257.47
4. Step 4: Simplify right side
   2,717.27x = 5,126,214.78
5. Step 5: Solve for x
   x = 5,126,214.78/2,717.27
6. Step 6: Final answer
   x = 1,886.53