Finding the Fourth Proportional to 1,205.94, 1,664.18 and 674.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,205.94 : 1,664.18 = 674.82 : x
2. Step 2: Convert to fraction form
   1,205.94/1,664.18 = 674.82/x
3. Step 3: Cross multiply
   1,205.94x = 1,664.18 × 674.82
4. Step 4: Simplify right side
   1,205.94x = 1,123,021.95
5. Step 5: Solve for x
   x = 1,123,021.95/1,205.94
6. Step 6: Final answer
   x = 931.24