Finding the Fourth Proportional to 3,853.17, 5,317.38 and 2,084.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,853.17 : 5,317.38 = 2,084.78 : x
2. Step 2: Convert to fraction form
   3,853.17/5,317.38 = 2,084.78/x
3. Step 3: Cross multiply
   3,853.17x = 5,317.38 × 2,084.78
4. Step 4: Simplify right side
   3,853.17x = 11,085,540.89
5. Step 5: Solve for x
   x = 11,085,540.89/3,853.17
6. Step 6: Final answer
   x = 2,876.99