Finding the Fourth Proportional to 2,169.57, 3,241.17 and 1,383.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,169.57 : 3,241.17 = 1,383.31 : x
2. Step 2: Convert to fraction form
   2,169.57/3,241.17 = 1,383.31/x
3. Step 3: Cross multiply
   2,169.57x = 3,241.17 × 1,383.31
4. Step 4: Simplify right side
   2,169.57x = 4,483,519.75
5. Step 5: Solve for x
   x = 4,483,519.75/2,169.57
6. Step 6: Final answer
   x = 2,066.55