Finding the Fourth Proportional to 2,569.78, 3,548.07 and 1,686.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,569.78 : 3,548.07 = 1,686.82 : x
2. Step 2: Convert to fraction form
   2,569.78/3,548.07 = 1,686.82/x
3. Step 3: Cross multiply
   2,569.78x = 3,548.07 × 1,686.82
4. Step 4: Simplify right side
   2,569.78x = 5,984,955.44
5. Step 5: Solve for x
   x = 5,984,955.44/2,569.78
6. Step 6: Final answer
   x = 2,328.98