Finding the Fourth Proportional to 2,168.78, 3,254.49 and 1,673.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.78 : 3,254.49 = 1,673.28 : x
2. Step 2: Convert to fraction form
   2,168.78/3,254.49 = 1,673.28/x
3. Step 3: Cross multiply
   2,168.78x = 3,254.49 × 1,673.28
4. Step 4: Simplify right side
   2,168.78x = 5,445,673.03
5. Step 5: Solve for x
   x = 5,445,673.03/2,168.78
6. Step 6: Final answer
   x = 2,510.94