Finding the Fourth Proportional to 2,608.86, 3,600.78 and 1,724.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,608.86 : 3,600.78 = 1,724.78 : x
2. Step 2: Convert to fraction form
   2,608.86/3,600.78 = 1,724.78/x
3. Step 3: Cross multiply
   2,608.86x = 3,600.78 × 1,724.78
4. Step 4: Simplify right side
   2,608.86x = 6,210,553.33
5. Step 5: Solve for x
   x = 6,210,553.33/2,608.86
6. Step 6: Final answer
   x = 2,380.56