Finding the Fourth Proportional to 1,198.05, 1,653.31 and 667.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,198.05 : 1,653.31 = 667.00 : x
2. Step 2: Convert to fraction form
   1,198.05/1,653.31 = 667.00/x
3. Step 3: Cross multiply
   1,198.05x = 1,653.31 × 667.00
4. Step 4: Simplify right side
   1,198.05x = 1,102,749.50
5. Step 5: Solve for x
   x = 1,102,749.50/1,198.05
6. Step 6: Final answer
   x = 920.45