Finding the Fourth Proportional to 1,728.07, 2,383.98 and 1,168.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,728.07 : 2,383.98 = 1,168.34 : x
2. Step 2: Convert to fraction form
   1,728.07/2,383.98 = 1,168.34/x
3. Step 3: Cross multiply
   1,728.07x = 2,383.98 × 1,168.34
4. Step 4: Simplify right side
   1,728.07x = 2,785,287.27
5. Step 5: Solve for x
   x = 2,785,287.27/1,728.07
6. Step 6: Final answer
   x = 1,611.79