Finding the Fourth Proportional to 2,286.86, 3,443.16 and 2,085.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,286.86 : 3,443.16 = 2,085.47 : x
2. Step 2: Convert to fraction form
   2,286.86/3,443.16 = 2,085.47/x
3. Step 3: Cross multiply
   2,286.86x = 3,443.16 × 2,085.47
4. Step 4: Simplify right side
   2,286.86x = 7,180,606.89
5. Step 5: Solve for x
   x = 7,180,606.89/2,286.86
6. Step 6: Final answer
   x = 3,139.94