Finding the Fourth Proportional to 1,204.73, 1,662.56 and 680.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,204.73 : 1,662.56 = 680.77 : x
2. Step 2: Convert to fraction form
   1,204.73/1,662.56 = 680.77/x
3. Step 3: Cross multiply
   1,204.73x = 1,662.56 × 680.77
4. Step 4: Simplify right side
   1,204.73x = 1,131,818.52
5. Step 5: Solve for x
   x = 1,131,818.52/1,204.73
6. Step 6: Final answer
   x = 939.48