Finding the Fourth Proportional to 2,479.82, 3,420.71 and 1,683.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,479.82 : 3,420.71 = 1,683.18 : x
2. Step 2: Convert to fraction form
   2,479.82/3,420.71 = 1,683.18/x
3. Step 3: Cross multiply
   2,479.82x = 3,420.71 × 1,683.18
4. Step 4: Simplify right side
   2,479.82x = 5,757,662.24
5. Step 5: Solve for x
   x = 5,757,662.24/2,479.82
6. Step 6: Final answer
   x = 2,321.81