Finding the Fourth Proportional to 2,142.26, 2,956.46 and 1,198.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.26 : 2,956.46 = 1,198.06 : x
2. Step 2: Convert to fraction form
   2,142.26/2,956.46 = 1,198.06/x
3. Step 3: Cross multiply
   2,142.26x = 2,956.46 × 1,198.06
4. Step 4: Simplify right side
   2,142.26x = 3,542,016.47
5. Step 5: Solve for x
   x = 3,542,016.47/2,142.26
6. Step 6: Final answer
   x = 1,653.40