Finding the Fourth Proportional to 3,684.50, 5,084.83 and 2,091.21

Step by Step Solution

1. Step 1: Write the proportion equation
   3,684.50 : 5,084.83 = 2,091.21 : x
2. Step 2: Convert to fraction form
   3,684.50/5,084.83 = 2,091.21/x
3. Step 3: Cross multiply
   3,684.50x = 5,084.83 × 2,091.21
4. Step 4: Simplify right side
   3,684.50x = 10,633,447.34
5. Step 5: Solve for x
   x = 10,633,447.34/3,684.50
6. Step 6: Final answer
   x = 2,885.99