Finding the Fourth Proportional to 2,640.72, 3,957.30 and 1,484.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,640.72 : 3,957.30 = 1,484.04 : x
2. Step 2: Convert to fraction form
   2,640.72/3,957.30 = 1,484.04/x
3. Step 3: Cross multiply
   2,640.72x = 3,957.30 × 1,484.04
4. Step 4: Simplify right side
   2,640.72x = 5,872,791.49
5. Step 5: Solve for x
   x = 5,872,791.49/2,640.72
6. Step 6: Final answer
   x = 2,223.94