Finding the Fourth Proportional to 2,362.80, 3,545.60 and 902.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,362.80 : 3,545.60 = 902.10 : x
2. Step 2: Convert to fraction form
   2,362.80/3,545.60 = 902.10/x
3. Step 3: Cross multiply
   2,362.80x = 3,545.60 × 902.10
4. Step 4: Simplify right side
   2,362.80x = 3,198,485.76
5. Step 5: Solve for x
   x = 3,198,485.76/2,362.80
6. Step 6: Final answer
   x = 1,353.68