Finding the Fourth Proportional to 2,142.20, 2,956.24 and 1,198.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.20 : 2,956.24 = 1,198.03 : x
2. Step 2: Convert to fraction form
   2,142.20/2,956.24 = 1,198.03/x
3. Step 3: Cross multiply
   2,142.20x = 2,956.24 × 1,198.03
4. Step 4: Simplify right side
   2,142.20x = 3,541,649.43
5. Step 5: Solve for x
   x = 3,541,649.43/2,142.20
6. Step 6: Final answer
   x = 1,653.28