Finding the Fourth Proportional to 3,826.48, 5,280.50 and 2,147.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,826.48 : 5,280.50 = 2,147.88 : x
2. Step 2: Convert to fraction form
   3,826.48/5,280.50 = 2,147.88/x
3. Step 3: Cross multiply
   3,826.48x = 5,280.50 × 2,147.88
4. Step 4: Simplify right side
   3,826.48x = 11,341,880.34
5. Step 5: Solve for x
   x = 11,341,880.34/3,826.48
6. Step 6: Final answer
   x = 2,964.05