Finding the Fourth Proportional to 2,772.72, 3,826.83 and 2,648.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,772.72 : 3,826.83 = 2,648.16 : x
2. Step 2: Convert to fraction form
   2,772.72/3,826.83 = 2,648.16/x
3. Step 3: Cross multiply
   2,772.72x = 3,826.83 × 2,648.16
4. Step 4: Simplify right side
   2,772.72x = 10,134,058.13
5. Step 5: Solve for x
   x = 10,134,058.13/2,772.72
6. Step 6: Final answer
   x = 3,654.92