Finding the Fourth Proportional to 2,291.46, 3,162.22 and 1,296.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,291.46 : 3,162.22 = 1,296.72 : x
2. Step 2: Convert to fraction form
   2,291.46/3,162.22 = 1,296.72/x
3. Step 3: Cross multiply
   2,291.46x = 3,162.22 × 1,296.72
4. Step 4: Simplify right side
   2,291.46x = 4,100,513.92
5. Step 5: Solve for x
   x = 4,100,513.92/2,291.46
6. Step 6: Final answer
   x = 1,789.48