Finding the Fourth Proportional to 3,680.87, 5,079.73 and 2,109.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,680.87 : 5,079.73 = 2,109.27 : x
2. Step 2: Convert to fraction form
   3,680.87/5,079.73 = 2,109.27/x
3. Step 3: Cross multiply
   3,680.87x = 5,079.73 × 2,109.27
4. Step 4: Simplify right side
   3,680.87x = 10,714,508.32
5. Step 5: Solve for x
   x = 10,714,508.32/3,680.87
6. Step 6: Final answer
   x = 2,910.86