Finding the Fourth Proportional to 2,185.05, 3,274.83 and 1,720.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.05 : 3,274.83 = 1,720.99 : x
2. Step 2: Convert to fraction form
   2,185.05/3,274.83 = 1,720.99/x
3. Step 3: Cross multiply
   2,185.05x = 3,274.83 × 1,720.99
4. Step 4: Simplify right side
   2,185.05x = 5,635,949.68
5. Step 5: Solve for x
   x = 5,635,949.68/2,185.05
6. Step 6: Final answer
   x = 2,579.33