Finding the Fourth Proportional to 3,680.16, 5,519.43 and 1,083.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,680.16 : 5,519.43 = 1,083.30 : x
2. Step 2: Convert to fraction form
   3,680.16/5,519.43 = 1,083.30/x
3. Step 3: Cross multiply
   3,680.16x = 5,519.43 × 1,083.30
4. Step 4: Simplify right side
   3,680.16x = 5,979,198.52
5. Step 5: Solve for x
   x = 5,979,198.52/3,680.16
6. Step 6: Final answer
   x = 1,624.71