Finding the Fourth Proportional to 1,605.60, 2,216.52 and 1,082.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,605.60 : 2,216.52 = 1,082.16 : x
2. Step 2: Convert to fraction form
   1,605.60/2,216.52 = 1,082.16/x
3. Step 3: Cross multiply
   1,605.60x = 2,216.52 × 1,082.16
4. Step 4: Simplify right side
   1,605.60x = 2,398,629.28
5. Step 5: Solve for x
   x = 2,398,629.28/1,605.60
6. Step 6: Final answer
   x = 1,493.91