Finding the Fourth Proportional to 2,640, 3,643.20 and 1,592.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,640 : 3,643.20 = 1,592.16 : x
2. Step 2: Convert to fraction form
   2,640/3,643.20 = 1,592.16/x
3. Step 3: Cross multiply
   2,640x = 3,643.20 × 1,592.16
4. Step 4: Simplify right side
   2,640x = 5,800,557.31
5. Step 5: Solve for x
   x = 5,800,557.31/2,640
6. Step 6: Final answer
   x = 2,197.18