Finding the Fourth Proportional to 2,868.80, 4,299.61 and 1,223.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,868.80 : 4,299.61 = 1,223.43 : x
2. Step 2: Convert to fraction form
   2,868.80/4,299.61 = 1,223.43/x
3. Step 3: Cross multiply
   2,868.80x = 4,299.61 × 1,223.43
4. Step 4: Simplify right side
   2,868.80x = 5,260,257.27
5. Step 5: Solve for x
   x = 5,260,257.27/2,868.80
6. Step 6: Final answer
   x = 1,833.61