Finding the Fourth Proportional to 1,601.38, 2,209.98 and 902.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,601.38 : 2,209.98 = 902.62 : x
2. Step 2: Convert to fraction form
   1,601.38/2,209.98 = 902.62/x
3. Step 3: Cross multiply
   1,601.38x = 2,209.98 × 902.62
4. Step 4: Simplify right side
   1,601.38x = 1,994,772.15
5. Step 5: Solve for x
   x = 1,994,772.15/1,601.38
6. Step 6: Final answer
   x = 1,245.66