Finding the Fourth Proportional to 2,485.38, 3,428.83 and 1,601.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.38 : 3,428.83 = 1,601.69 : x
2. Step 2: Convert to fraction form
   2,485.38/3,428.83 = 1,601.69/x
3. Step 3: Cross multiply
   2,485.38x = 3,428.83 × 1,601.69
4. Step 4: Simplify right side
   2,485.38x = 5,491,922.72
5. Step 5: Solve for x
   x = 5,491,922.72/2,485.38
6. Step 6: Final answer
   x = 2,209.69