Finding the Fourth Proportional to 3,684.69, 5,085.05 and 2,173.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,684.69 : 5,085.05 = 2,173.10 : x
2. Step 2: Convert to fraction form
   3,684.69/5,085.05 = 2,173.10/x
3. Step 3: Cross multiply
   3,684.69x = 5,085.05 × 2,173.10
4. Step 4: Simplify right side
   3,684.69x = 11,050,285.86
5. Step 5: Solve for x
   x = 11,050,285.86/3,684.69
6. Step 6: Final answer
   x = 2,998.97