Finding the Fourth Proportional to 2,142.54, 2,956.47 and 1,198.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.54 : 2,956.47 = 1,198.25 : x
2. Step 2: Convert to fraction form
   2,142.54/2,956.47 = 1,198.25/x
3. Step 3: Cross multiply
   2,142.54x = 2,956.47 × 1,198.25
4. Step 4: Simplify right side
   2,142.54x = 3,542,590.18
5. Step 5: Solve for x
   x = 3,542,590.18/2,142.54
6. Step 6: Final answer
   x = 1,653.45