Finding the Fourth Proportional to 1,890.73, 2,609.33 and 1,144.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,890.73 : 2,609.33 = 1,144.72 : x
2. Step 2: Convert to fraction form
   1,890.73/2,609.33 = 1,144.72/x
3. Step 3: Cross multiply
   1,890.73x = 2,609.33 × 1,144.72
4. Step 4: Simplify right side
   1,890.73x = 2,986,952.24
5. Step 5: Solve for x
   x = 2,986,952.24/1,890.73
6. Step 6: Final answer
   x = 1,579.79