Finding the Fourth Proportional to 2,076.29, 2,865.28 and 1,144.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,076.29 : 2,865.28 = 1,144.79 : x
2. Step 2: Convert to fraction form
   2,076.29/2,865.28 = 1,144.79/x
3. Step 3: Cross multiply
   2,076.29x = 2,865.28 × 1,144.79
4. Step 4: Simplify right side
   2,076.29x = 3,280,143.89
5. Step 5: Solve for x
   x = 3,280,143.89/2,076.29
6. Step 6: Final answer
   x = 1,579.81