Finding the Fourth Proportional to 2,718.72, 4,076.73 and 1,256.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,718.72 : 4,076.73 = 1,256.63 : x
2. Step 2: Convert to fraction form
   2,718.72/4,076.73 = 1,256.63/x
3. Step 3: Cross multiply
   2,718.72x = 4,076.73 × 1,256.63
4. Step 4: Simplify right side
   2,718.72x = 5,122,920.84
5. Step 5: Solve for x
   x = 5,122,920.84/2,718.72
6. Step 6: Final answer
   x = 1,884.31