Finding the Fourth Proportional to 2,162.76, 3,240.90 and 1,296.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.76 : 3,240.90 = 1,296.06 : x
2. Step 2: Convert to fraction form
   2,162.76/3,240.90 = 1,296.06/x
3. Step 3: Cross multiply
   2,162.76x = 3,240.90 × 1,296.06
4. Step 4: Simplify right side
   2,162.76x = 4,200,400.85
5. Step 5: Solve for x
   x = 4,200,400.85/2,162.76
6. Step 6: Final answer
   x = 1,942.15