Finding the Fourth Proportional to 3,911.72, 5,398.06 and 2,233.09

Step by Step Solution

1. Step 1: Write the proportion equation
   3,911.72 : 5,398.06 = 2,233.09 : x
2. Step 2: Convert to fraction form
   3,911.72/5,398.06 = 2,233.09/x
3. Step 3: Cross multiply
   3,911.72x = 5,398.06 × 2,233.09
4. Step 4: Simplify right side
   3,911.72x = 12,054,315.65
5. Step 5: Solve for x
   x = 12,054,315.65/3,911.72
6. Step 6: Final answer
   x = 3,081.59