Finding the Fourth Proportional to 2,858.94, 3,944.43 and 1,974.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,858.94 : 3,944.43 = 1,974.42 : x
2. Step 2: Convert to fraction form
   2,858.94/3,944.43 = 1,974.42/x
3. Step 3: Cross multiply
   2,858.94x = 3,944.43 × 1,974.42
4. Step 4: Simplify right side
   2,858.94x = 7,787,961.48
5. Step 5: Solve for x
   x = 7,787,961.48/2,858.94
6. Step 6: Final answer
   x = 2,724.07