Finding the Fourth Proportional to 2,760.42, 4,148.82 and 2,556.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,760.42 : 4,148.82 = 2,556.72 : x
2. Step 2: Convert to fraction form
   2,760.42/4,148.82 = 2,556.72/x
3. Step 3: Cross multiply
   2,760.42x = 4,148.82 × 2,556.72
4. Step 4: Simplify right side
   2,760.42x = 10,607,371.07
5. Step 5: Solve for x
   x = 10,607,371.07/2,760.42
6. Step 6: Final answer
   x = 3,842.67