Finding the Fourth Proportional to 3,579.30, 5,368.82 and 1,939.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,579.30 : 5,368.82 = 1,939.05 : x
2. Step 2: Convert to fraction form
   3,579.30/5,368.82 = 1,939.05/x
3. Step 3: Cross multiply
   3,579.30x = 5,368.82 × 1,939.05
4. Step 4: Simplify right side
   3,579.30x = 10,410,400.73
5. Step 5: Solve for x
   x = 10,410,400.73/3,579.30
6. Step 6: Final answer
   x = 2,908.50