Finding the Fourth Proportional to 2,866.46, 4,300.12 and 1,223

Step by Step Solution

1. Step 1: Write the proportion equation
   2,866.46 : 4,300.12 = 1,223 : x
2. Step 2: Convert to fraction form
   2,866.46/4,300.12 = 1,223/x
3. Step 3: Cross multiply
   2,866.46x = 4,300.12 × 1,223
4. Step 4: Simplify right side
   2,866.46x = 5,259,046.76
5. Step 5: Solve for x
   x = 5,259,046.76/2,866.46
6. Step 6: Final answer
   x = 1,834.68