Finding the Fourth Proportional to 2,718.81, 4,077.55 and 1,256.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,718.81 : 4,077.55 = 1,256.55 : x
2. Step 2: Convert to fraction form
   2,718.81/4,077.55 = 1,256.55/x
3. Step 3: Cross multiply
   2,718.81x = 4,077.55 × 1,256.55
4. Step 4: Simplify right side
   2,718.81x = 5,123,645.45
5. Step 5: Solve for x
   x = 5,123,645.45/2,718.81
6. Step 6: Final answer
   x = 1,884.52