Finding the Fourth Proportional to 2,825.69, 4,239.42 and 1,267

Step by Step Solution

1. Step 1: Write the proportion equation
   2,825.69 : 4,239.42 = 1,267 : x
2. Step 2: Convert to fraction form
   2,825.69/4,239.42 = 1,267/x
3. Step 3: Cross multiply
   2,825.69x = 4,239.42 × 1,267
4. Step 4: Simplify right side
   2,825.69x = 5,371,345.14
5. Step 5: Solve for x
   x = 5,371,345.14/2,825.69
6. Step 6: Final answer
   x = 1,900.90