Finding the Fourth Proportional to 1,049.10, 1,443.47 and 908.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,049.10 : 1,443.47 = 908.79 : x
2. Step 2: Convert to fraction form
   1,049.10/1,443.47 = 908.79/x
3. Step 3: Cross multiply
   1,049.10x = 1,443.47 × 908.79
4. Step 4: Simplify right side
   1,049.10x = 1,311,806.56
5. Step 5: Solve for x
   x = 1,311,806.56/1,049.10
6. Step 6: Final answer
   x = 1,250.41