Finding the Fourth Proportional to 2,817.57, 4,228.83 and 1,087.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,817.57 : 4,228.83 = 1,087.41 : x
2. Step 2: Convert to fraction form
   2,817.57/4,228.83 = 1,087.41/x
3. Step 3: Cross multiply
   2,817.57x = 4,228.83 × 1,087.41
4. Step 4: Simplify right side
   2,817.57x = 4,598,472.03
5. Step 5: Solve for x
   x = 4,598,472.03/2,817.57
6. Step 6: Final answer
   x = 1,632.07