Finding the Fourth Proportional to 2,231.90, 3,078.61 and 1,759.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,231.90 : 3,078.61 = 1,759.28 : x
2. Step 2: Convert to fraction form
   2,231.90/3,078.61 = 1,759.28/x
3. Step 3: Cross multiply
   2,231.90x = 3,078.61 × 1,759.28
4. Step 4: Simplify right side
   2,231.90x = 5,416,137.00
5. Step 5: Solve for x
   x = 5,416,137.00/2,231.90
6. Step 6: Final answer
   x = 2,426.69