Finding the Fourth Proportional to 1,204.29, 1,662.06 and 680.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,204.29 : 1,662.06 = 680.42 : x
2. Step 2: Convert to fraction form
   1,204.29/1,662.06 = 680.42/x
3. Step 3: Cross multiply
   1,204.29x = 1,662.06 × 680.42
4. Step 4: Simplify right side
   1,204.29x = 1,130,890.55
5. Step 5: Solve for x
   x = 1,130,890.55/1,204.29
6. Step 6: Final answer
   x = 939.05