Finding the Fourth Proportional to 1,890.38, 2,608.52 and 1,144.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,890.38 : 2,608.52 = 1,144.07 : x
2. Step 2: Convert to fraction form
   1,890.38/2,608.52 = 1,144.07/x
3. Step 3: Cross multiply
   1,890.38x = 2,608.52 × 1,144.07
4. Step 4: Simplify right side
   1,890.38x = 2,984,319.29
5. Step 5: Solve for x
   x = 2,984,319.29/1,890.38
6. Step 6: Final answer
   x = 1,578.69