Finding the Fourth Proportional to 2,736.26, 4,095.86 and 2,648.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,736.26 : 4,095.86 = 2,648.78 : x
2. Step 2: Convert to fraction form
   2,736.26/4,095.86 = 2,648.78/x
3. Step 3: Cross multiply
   2,736.26x = 4,095.86 × 2,648.78
4. Step 4: Simplify right side
   2,736.26x = 10,849,032.05
5. Step 5: Solve for x
   x = 10,849,032.05/2,736.26
6. Step 6: Final answer
   x = 3,964.91