Finding the Fourth Proportional to 1,890.20, 2,608.05 and 1,144.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,890.20 : 2,608.05 = 1,144.14 : x
2. Step 2: Convert to fraction form
   1,890.20/2,608.05 = 1,144.14/x
3. Step 3: Cross multiply
   1,890.20x = 2,608.05 × 1,144.14
4. Step 4: Simplify right side
   1,890.20x = 2,983,974.33
5. Step 5: Solve for x
   x = 2,983,974.33/1,890.20
6. Step 6: Final answer
   x = 1,578.66