Finding the Fourth Proportional to 3,881.82, 5,357.34 and 2,389.44

Step by Step Solution

1. Step 1: Write the proportion equation
   3,881.82 : 5,357.34 = 2,389.44 : x
2. Step 2: Convert to fraction form
   3,881.82/5,357.34 = 2,389.44/x
3. Step 3: Cross multiply
   3,881.82x = 5,357.34 × 2,389.44
4. Step 4: Simplify right side
   3,881.82x = 12,801,042.49
5. Step 5: Solve for x
   x = 12,801,042.49/3,881.82
6. Step 6: Final answer
   x = 3,297.69