Finding the Fourth Proportional to 3,826.72, 5,280.94 and 2,148.22

Step by Step Solution

1. Step 1: Write the proportion equation
   3,826.72 : 5,280.94 = 2,148.22 : x
2. Step 2: Convert to fraction form
   3,826.72/5,280.94 = 2,148.22/x
3. Step 3: Cross multiply
   3,826.72x = 5,280.94 × 2,148.22
4. Step 4: Simplify right side
   3,826.72x = 11,344,620.93
5. Step 5: Solve for x
   x = 11,344,620.93/3,826.72
6. Step 6: Final answer
   x = 2,964.58