Finding the Fourth Proportional to 2,640.96, 3,645.18 and 1,593.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,640.96 : 3,645.18 = 1,593.72 : x
2. Step 2: Convert to fraction form
   2,640.96/3,645.18 = 1,593.72/x
3. Step 3: Cross multiply
   2,640.96x = 3,645.18 × 1,593.72
4. Step 4: Simplify right side
   2,640.96x = 5,809,396.27
5. Step 5: Solve for x
   x = 5,809,396.27/2,640.96
6. Step 6: Final answer
   x = 2,199.73