Finding the Fourth Proportional to 1,601.05, 2,209.39 and 902.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,601.05 : 2,209.39 = 902.29 : x
2. Step 2: Convert to fraction form
   1,601.05/2,209.39 = 902.29/x
3. Step 3: Cross multiply
   1,601.05x = 2,209.39 × 902.29
4. Step 4: Simplify right side
   1,601.05x = 1,993,510.50
5. Step 5: Solve for x
   x = 1,993,510.50/1,601.05
6. Step 6: Final answer
   x = 1,245.13