Finding the Fourth Proportional to 2,309.83, 3,183.78 and 1,680.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,309.83 : 3,183.78 = 1,680.46 : x
2. Step 2: Convert to fraction form
   2,309.83/3,183.78 = 1,680.46/x
3. Step 3: Cross multiply
   2,309.83x = 3,183.78 × 1,680.46
4. Step 4: Simplify right side
   2,309.83x = 5,350,214.94
5. Step 5: Solve for x
   x = 5,350,214.94/2,309.83
6. Step 6: Final answer
   x = 2,316.28