Finding the Fourth Proportional to 2,076.05, 2,864.81 and 1,144.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,076.05 : 2,864.81 = 1,144.55 : x
2. Step 2: Convert to fraction form
   2,076.05/2,864.81 = 1,144.55/x
3. Step 3: Cross multiply
   2,076.05x = 2,864.81 × 1,144.55
4. Step 4: Simplify right side
   2,076.05x = 3,278,918.29
5. Step 5: Solve for x
   x = 3,278,918.29/2,076.05
6. Step 6: Final answer
   x = 1,579.40