Finding the Fourth Proportional to 2,305.55, 3,185.83 and 1,641.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,305.55 : 3,185.83 = 1,641.25 : x
2. Step 2: Convert to fraction form
   2,305.55/3,185.83 = 1,641.25/x
3. Step 3: Cross multiply
   2,305.55x = 3,185.83 × 1,641.25
4. Step 4: Simplify right side
   2,305.55x = 5,228,745.04
5. Step 5: Solve for x
   x = 5,228,745.04/2,305.55
6. Step 6: Final answer
   x = 2,267.89