Finding the Fourth Proportional to 2,640.76, 3,644.40 and 1,592.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,640.76 : 3,644.40 = 1,592.98 : x
2. Step 2: Convert to fraction form
   2,640.76/3,644.40 = 1,592.98/x
3. Step 3: Cross multiply
   2,640.76x = 3,644.40 × 1,592.98
4. Step 4: Simplify right side
   2,640.76x = 5,805,456.31
5. Step 5: Solve for x
   x = 5,805,456.31/2,640.76
6. Step 6: Final answer
   x = 2,198.40