Finding the Fourth Proportional to 2,081.69, 3,121.77 and 848.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.69 : 3,121.77 = 848.43 : x
2. Step 2: Convert to fraction form
   2,081.69/3,121.77 = 848.43/x
3. Step 3: Cross multiply
   2,081.69x = 3,121.77 × 848.43
4. Step 4: Simplify right side
   2,081.69x = 2,648,603.32
5. Step 5: Solve for x
   x = 2,648,603.32/2,081.69
6. Step 6: Final answer
   x = 1,272.33