Finding the Fourth Proportional to 2,379.24, 3,275.88 and 2,160.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,379.24 : 3,275.88 = 2,160.54 : x
2. Step 2: Convert to fraction form
   2,379.24/3,275.88 = 2,160.54/x
3. Step 3: Cross multiply
   2,379.24x = 3,275.88 × 2,160.54
4. Step 4: Simplify right side
   2,379.24x = 7,077,669.78
5. Step 5: Solve for x
   x = 7,077,669.78/2,379.24
6. Step 6: Final answer
   x = 2,974.76