Finding the Fourth Proportional to 2,144.34, 3,216.03 and 1,089.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.34 : 3,216.03 = 1,089.09 : x
2. Step 2: Convert to fraction form
   2,144.34/3,216.03 = 1,089.09/x
3. Step 3: Cross multiply
   2,144.34x = 3,216.03 × 1,089.09
4. Step 4: Simplify right side
   2,144.34x = 3,502,531.33
5. Step 5: Solve for x
   x = 3,502,531.33/2,144.34
6. Step 6: Final answer
   x = 1,633.38