Finding the Fourth Proportional to 1,206.05, 1,664.41 and 674.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,206.05 : 1,664.41 = 674.92 : x
2. Step 2: Convert to fraction form
   1,206.05/1,664.41 = 674.92/x
3. Step 3: Cross multiply
   1,206.05x = 1,664.41 × 674.92
4. Step 4: Simplify right side
   1,206.05x = 1,123,335.89
5. Step 5: Solve for x
   x = 1,123,335.89/1,206.05
6. Step 6: Final answer
   x = 931.42