Finding the Fourth Proportional to 3,826.52, 5,280.72 and 2,148.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,826.52 : 5,280.72 = 2,148.20 : x
2. Step 2: Convert to fraction form
   3,826.52/5,280.72 = 2,148.20/x
3. Step 3: Cross multiply
   3,826.52x = 5,280.72 × 2,148.20
4. Step 4: Simplify right side
   3,826.52x = 11,344,042.70
5. Step 5: Solve for x
   x = 11,344,042.70/3,826.52
6. Step 6: Final answer
   x = 2,964.58