Finding the Fourth Proportional to 3,826.17, 5,280.17 and 2,147.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,826.17 : 5,280.17 = 2,147.94 : x
2. Step 2: Convert to fraction form
   3,826.17/5,280.17 = 2,147.94/x
3. Step 3: Cross multiply
   3,826.17x = 5,280.17 × 2,147.94
4. Step 4: Simplify right side
   3,826.17x = 11,341,488.35
5. Step 5: Solve for x
   x = 11,341,488.35/3,826.17
6. Step 6: Final answer
   x = 2,964.19