Finding the Fourth Proportional to 2,568.78, 3,546.69 and 1,685.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,568.78 : 3,546.69 = 1,685.82 : x
2. Step 2: Convert to fraction form
   2,568.78/3,546.69 = 1,685.82/x
3. Step 3: Cross multiply
   2,568.78x = 3,546.69 × 1,685.82
4. Step 4: Simplify right side
   2,568.78x = 5,979,080.94
5. Step 5: Solve for x
   x = 5,979,080.94/2,568.78
6. Step 6: Final answer
   x = 2,327.60