Finding the Fourth Proportional to 1,890.55, 2,608.35 and 1,144.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,890.55 : 2,608.35 = 1,144.27 : x
2. Step 2: Convert to fraction form
   1,890.55/2,608.35 = 1,144.27/x
3. Step 3: Cross multiply
   1,890.55x = 2,608.35 × 1,144.27
4. Step 4: Simplify right side
   1,890.55x = 2,984,643.61
5. Step 5: Solve for x
   x = 2,984,643.61/1,890.55
6. Step 6: Final answer
   x = 1,578.72