Finding the Fourth Proportional to 2,608.78, 3,600.22 and 1,489.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,608.78 : 3,600.22 = 1,489.90 : x
2. Step 2: Convert to fraction form
   2,608.78/3,600.22 = 1,489.90/x
3. Step 3: Cross multiply
   2,608.78x = 3,600.22 × 1,489.90
4. Step 4: Simplify right side
   2,608.78x = 5,363,967.78
5. Step 5: Solve for x
   x = 5,363,967.78/2,608.78
6. Step 6: Final answer
   x = 2,056.12