Finding the Fourth Proportional to 2,919.75, 4,358.83 and 2,817.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,919.75 : 4,358.83 = 2,817.23 : x
2. Step 2: Convert to fraction form
   2,919.75/4,358.83 = 2,817.23/x
3. Step 3: Cross multiply
   2,919.75x = 4,358.83 × 2,817.23
4. Step 4: Simplify right side
   2,919.75x = 12,279,815.72
5. Step 5: Solve for x
   x = 12,279,815.72/2,919.75
6. Step 6: Final answer
   x = 4,205.78