Finding the Fourth Proportional to 2,056.69, 3,083.49 and 669.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,056.69 : 3,083.49 = 669.20 : x
2. Step 2: Convert to fraction form
   2,056.69/3,083.49 = 669.20/x
3. Step 3: Cross multiply
   2,056.69x = 3,083.49 × 669.20
4. Step 4: Simplify right side
   2,056.69x = 2,063,456.09
5. Step 5: Solve for x
   x = 2,063,456.09/2,056.69
6. Step 6: Final answer
   x = 1,003.29