Finding the Fourth Proportional to 2,142.59, 2,956.83 and 1,198.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.59 : 2,956.83 = 1,198.35 : x
2. Step 2: Convert to fraction form
   2,142.59/2,956.83 = 1,198.35/x
3. Step 3: Cross multiply
   2,142.59x = 2,956.83 × 1,198.35
4. Step 4: Simplify right side
   2,142.59x = 3,543,317.23
5. Step 5: Solve for x
   x = 3,543,317.23/2,142.59
6. Step 6: Final answer
   x = 1,653.75