Finding the Fourth Proportional to 2,228.06, 3,074.92 and 1,296.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,228.06 : 3,074.92 = 1,296.50 : x
2. Step 2: Convert to fraction form
   2,228.06/3,074.92 = 1,296.50/x
3. Step 3: Cross multiply
   2,228.06x = 3,074.92 × 1,296.50
4. Step 4: Simplify right side
   2,228.06x = 3,986,633.78
5. Step 5: Solve for x
   x = 3,986,633.78/2,228.06
6. Step 6: Final answer
   x = 1,789.28