Finding the Fourth Proportional to 1,890.72, 2,609.25 and 1,144.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,890.72 : 2,609.25 = 1,144.83 : x
2. Step 2: Convert to fraction form
   1,890.72/2,609.25 = 1,144.83/x
3. Step 3: Cross multiply
   1,890.72x = 2,609.25 × 1,144.83
4. Step 4: Simplify right side
   1,890.72x = 2,987,147.68
5. Step 5: Solve for x
   x = 2,987,147.68/1,890.72
6. Step 6: Final answer
   x = 1,579.90