Finding the Fourth Proportional to 1,606.50, 2,217.06 and 908.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,606.50 : 2,217.06 = 908.10 : x
2. Step 2: Convert to fraction form
   1,606.50/2,217.06 = 908.10/x
3. Step 3: Cross multiply
   1,606.50x = 2,217.06 × 908.10
4. Step 4: Simplify right side
   1,606.50x = 2,013,312.19
5. Step 5: Solve for x
   x = 2,013,312.19/1,606.50
6. Step 6: Final answer
   x = 1,253.23