Finding the Fourth Proportional to 1,198.42, 1,653.86 and 674.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,198.42 : 1,653.86 = 674.44 : x
2. Step 2: Convert to fraction form
   1,198.42/1,653.86 = 674.44/x
3. Step 3: Cross multiply
   1,198.42x = 1,653.86 × 674.44
4. Step 4: Simplify right side
   1,198.42x = 1,115,426.89
5. Step 5: Solve for x
   x = 1,115,426.89/1,198.42
6. Step 6: Final answer
   x = 930.75