Finding the Fourth Proportional to 2,648.72, 3,651.76 and 2,174.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.72 : 3,651.76 = 2,174.88 : x
2. Step 2: Convert to fraction form
   2,648.72/3,651.76 = 2,174.88/x
3. Step 3: Cross multiply
   2,648.72x = 3,651.76 × 2,174.88
4. Step 4: Simplify right side
   2,648.72x = 7,942,139.79
5. Step 5: Solve for x
   x = 7,942,139.79/2,648.72
6. Step 6: Final answer
   x = 2,998.48