Finding the Fourth Proportional to 1,198.84, 1,654.38 and 674.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,198.84 : 1,654.38 = 674.86 : x
2. Step 2: Convert to fraction form
   1,198.84/1,654.38 = 674.86/x
3. Step 3: Cross multiply
   1,198.84x = 1,654.38 × 674.86
4. Step 4: Simplify right side
   1,198.84x = 1,116,474.89
5. Step 5: Solve for x
   x = 1,116,474.89/1,198.84
6. Step 6: Final answer
   x = 931.30