Finding the Fourth Proportional to 1,198.82, 1,654.41 and 667.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,198.82 : 1,654.41 = 667.69 : x
2. Step 2: Convert to fraction form
   1,198.82/1,654.41 = 667.69/x
3. Step 3: Cross multiply
   1,198.82x = 1,654.41 × 667.69
4. Step 4: Simplify right side
   1,198.82x = 1,104,636.93
5. Step 5: Solve for x
   x = 1,104,636.93/1,198.82
6. Step 6: Final answer
   x = 921.44