Finding the Fourth Proportional to 2,142.55, 2,956.58 and 1,198.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.55 : 2,956.58 = 1,198.27 : x
2. Step 2: Convert to fraction form
   2,142.55/2,956.58 = 1,198.27/x
3. Step 3: Cross multiply
   2,142.55x = 2,956.58 × 1,198.27
4. Step 4: Simplify right side
   2,142.55x = 3,542,783.31
5. Step 5: Solve for x
   x = 3,542,783.31/2,142.55
6. Step 6: Final answer
   x = 1,653.53