Finding the Fourth Proportional to 2,142.43, 2,956.61 and 1,198.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.43 : 2,956.61 = 1,198.32 : x
2. Step 2: Convert to fraction form
   2,142.43/2,956.61 = 1,198.32/x
3. Step 3: Cross multiply
   2,142.43x = 2,956.61 × 1,198.32
4. Step 4: Simplify right side
   2,142.43x = 3,542,964.90
5. Step 5: Solve for x
   x = 3,542,964.90/2,142.43
6. Step 6: Final answer
   x = 1,653.71