Finding the Fourth Proportional to 2,142.67, 2,956.74 and 1,198.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.67 : 2,956.74 = 1,198.54 : x
2. Step 2: Convert to fraction form
   2,142.67/2,956.74 = 1,198.54/x
3. Step 3: Cross multiply
   2,142.67x = 2,956.74 × 1,198.54
4. Step 4: Simplify right side
   2,142.67x = 3,543,771.16
5. Step 5: Solve for x
   x = 3,543,771.16/2,142.67
6. Step 6: Final answer
   x = 1,653.90