Finding the Fourth Proportional to 1,198.72, 1,656.57 and 974.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,198.72 : 1,656.57 = 974.22 : x
2. Step 2: Convert to fraction form
   1,198.72/1,656.57 = 974.22/x
3. Step 3: Cross multiply
   1,198.72x = 1,656.57 × 974.22
4. Step 4: Simplify right side
   1,198.72x = 1,613,855.59
5. Step 5: Solve for x
   x = 1,613,855.59/1,198.72
6. Step 6: Final answer
   x = 1,346.31