Finding the Fourth Proportional to 3,680.91, 5,520.83 and 1,083.51

Step by Step Solution

1. Step 1: Write the proportion equation
   3,680.91 : 5,520.83 = 1,083.51 : x
2. Step 2: Convert to fraction form
   3,680.91/5,520.83 = 1,083.51/x
3. Step 3: Cross multiply
   3,680.91x = 5,520.83 × 1,083.51
4. Step 4: Simplify right side
   3,680.91x = 5,981,869.10
5. Step 5: Solve for x
   x = 5,981,869.10/3,680.91
6. Step 6: Final answer
   x = 1,625.11