Finding the Fourth Proportional to 3,681.33, 5,080.50 and 2,189.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,681.33 : 5,080.50 = 2,189.31 : x
2. Step 2: Convert to fraction form
   3,681.33/5,080.50 = 2,189.31/x
3. Step 3: Cross multiply
   3,681.33x = 5,080.50 × 2,189.31
4. Step 4: Simplify right side
   3,681.33x = 11,122,789.46
5. Step 5: Solve for x
   x = 11,122,789.46/3,681.33
6. Step 6: Final answer
   x = 3,021.41