Finding the Fourth Proportional to 2,421.05, 3,341.54 and 1,581.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,421.05 : 3,341.54 = 1,581.89 : x
2. Step 2: Convert to fraction form
   2,421.05/3,341.54 = 1,581.89/x
3. Step 3: Cross multiply
   2,421.05x = 3,341.54 × 1,581.89
4. Step 4: Simplify right side
   2,421.05x = 5,285,948.71
5. Step 5: Solve for x
   x = 5,285,948.71/2,421.05
6. Step 6: Final answer
   x = 2,183.33