Finding the Fourth Proportional to 3,480.16, 5,216.59 and 1,629.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,480.16 : 5,216.59 = 1,629.72 : x
2. Step 2: Convert to fraction form
   3,480.16/5,216.59 = 1,629.72/x
3. Step 3: Cross multiply
   3,480.16x = 5,216.59 × 1,629.72
4. Step 4: Simplify right side
   3,480.16x = 8,501,581.05
5. Step 5: Solve for x
   x = 8,501,581.05/3,480.16
6. Step 6: Final answer
   x = 2,442.87