Finding the Fourth Proportional to 2,817.36, 4,223.56 and 1,084.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,817.36 : 4,223.56 = 1,084.80 : x
2. Step 2: Convert to fraction form
   2,817.36/4,223.56 = 1,084.80/x
3. Step 3: Cross multiply
   2,817.36x = 4,223.56 × 1,084.80
4. Step 4: Simplify right side
   2,817.36x = 4,581,717.89
5. Step 5: Solve for x
   x = 4,581,717.89/2,817.36
6. Step 6: Final answer
   x = 1,626.25