Finding the Fourth Proportional to 2,823.78, 4,233.86 and 949.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,823.78 : 4,233.86 = 949.44 : x
2. Step 2: Convert to fraction form
   2,823.78/4,233.86 = 949.44/x
3. Step 3: Cross multiply
   2,823.78x = 4,233.86 × 949.44
4. Step 4: Simplify right side
   2,823.78x = 4,019,796.04
5. Step 5: Solve for x
   x = 4,019,796.04/2,823.78
6. Step 6: Final answer
   x = 1,423.55