Finding the Fourth Proportional to 2,008.60, 3,007.43 and 1,698.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,008.60 : 3,007.43 = 1,698.78 : x
2. Step 2: Convert to fraction form
   2,008.60/3,007.43 = 1,698.78/x
3. Step 3: Cross multiply
   2,008.60x = 3,007.43 × 1,698.78
4. Step 4: Simplify right side
   2,008.60x = 5,108,961.94
5. Step 5: Solve for x
   x = 5,108,961.94/2,008.60
6. Step 6: Final answer
   x = 2,543.54