Finding the Fourth Proportional to 1,606.72, 2,217.27 and 908.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,606.72 : 2,217.27 = 908.09 : x
2. Step 2: Convert to fraction form
   1,606.72/2,217.27 = 908.09/x
3. Step 3: Cross multiply
   1,606.72x = 2,217.27 × 908.09
4. Step 4: Simplify right side
   1,606.72x = 2,013,480.71
5. Step 5: Solve for x
   x = 2,013,480.71/1,606.72
6. Step 6: Final answer
   x = 1,253.17