Finding the Fourth Proportional to 2,001.68, 3,002.88 and 685.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,001.68 : 3,002.88 = 685.37 : x
2. Step 2: Convert to fraction form
   2,001.68/3,002.88 = 685.37/x
3. Step 3: Cross multiply
   2,001.68x = 3,002.88 × 685.37
4. Step 4: Simplify right side
   2,001.68x = 2,058,068.85
5. Step 5: Solve for x
   x = 2,058,068.85/2,001.68
6. Step 6: Final answer
   x = 1,028.17