Finding the Fourth Proportional to 2,012.68, 2,778.69 and 1,267.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.68 : 2,778.69 = 1,267.28 : x
2. Step 2: Convert to fraction form
   2,012.68/2,778.69 = 1,267.28/x
3. Step 3: Cross multiply
   2,012.68x = 2,778.69 × 1,267.28
4. Step 4: Simplify right side
   2,012.68x = 3,521,371.32
5. Step 5: Solve for x
   x = 3,521,371.32/2,012.68
6. Step 6: Final answer
   x = 1,749.59