Finding the Fourth Proportional to 845.33, 1,167.69 and 680.18

Step by Step Solution

1. Step 1: Write the proportion equation
   845.33 : 1,167.69 = 680.18 : x
2. Step 2: Convert to fraction form
   845.33/1,167.69 = 680.18/x
3. Step 3: Cross multiply
   845.33x = 1,167.69 × 680.18
4. Step 4: Simplify right side
   845.33x = 794,233.55
5. Step 5: Solve for x
   x = 794,233.55/845.33
6. Step 6: Final answer
   x = 939.55