Finding the Fourth Proportional to 3,581.89, 4,945.31 and 2,920.33

Step by Step Solution

1. Step 1: Write the proportion equation
   3,581.89 : 4,945.31 = 2,920.33 : x
2. Step 2: Convert to fraction form
   3,581.89/4,945.31 = 2,920.33/x
3. Step 3: Cross multiply
   3,581.89x = 4,945.31 × 2,920.33
4. Step 4: Simplify right side
   3,581.89x = 14,441,937.15
5. Step 5: Solve for x
   x = 14,441,937.15/3,581.89
6. Step 6: Final answer
   x = 4,031.93