Finding the Fourth Proportional to 2,608.64, 3,600.72 and 1,600.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,608.64 : 3,600.72 = 1,600.72 : x
2. Step 2: Convert to fraction form
   2,608.64/3,600.72 = 1,600.72/x
3. Step 3: Cross multiply
   2,608.64x = 3,600.72 × 1,600.72
4. Step 4: Simplify right side
   2,608.64x = 5,763,744.52
5. Step 5: Solve for x
   x = 5,763,744.52/2,608.64
6. Step 6: Final answer
   x = 2,209.48