Finding the Fourth Proportional to 3,485.57, 4,807.58 and 2,209.01

Step by Step Solution

1. Step 1: Write the proportion equation
   3,485.57 : 4,807.58 = 2,209.01 : x
2. Step 2: Convert to fraction form
   3,485.57/4,807.58 = 2,209.01/x
3. Step 3: Cross multiply
   3,485.57x = 4,807.58 × 2,209.01
4. Step 4: Simplify right side
   3,485.57x = 10,619,993.27
5. Step 5: Solve for x
   x = 10,619,993.27/3,485.57
6. Step 6: Final answer
   x = 3,046.84