Finding the Fourth Proportional to 3,485.50, 5,228.49 and 1,144.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,485.50 : 5,228.49 = 1,144.89 : x
2. Step 2: Convert to fraction form
   3,485.50/5,228.49 = 1,144.89/x
3. Step 3: Cross multiply
   3,485.50x = 5,228.49 × 1,144.89
4. Step 4: Simplify right side
   3,485.50x = 5,986,045.92
5. Step 5: Solve for x
   x = 5,986,045.92/3,485.50
6. Step 6: Final answer
   x = 1,717.41