Finding the Fourth Proportional to 1,890.37, 2,608.71 and 1,144.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,890.37 : 2,608.71 = 1,144.18 : x
2. Step 2: Convert to fraction form
   1,890.37/2,608.71 = 1,144.18/x
3. Step 3: Cross multiply
   1,890.37x = 2,608.71 × 1,144.18
4. Step 4: Simplify right side
   1,890.37x = 2,984,833.81
5. Step 5: Solve for x
   x = 2,984,833.81/1,890.37
6. Step 6: Final answer
   x = 1,578.97