Finding the Fourth Proportional to 2,019.72, 3,029.58 and 558.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.72 : 3,029.58 = 558.99 : x
2. Step 2: Convert to fraction form
   2,019.72/3,029.58 = 558.99/x
3. Step 3: Cross multiply
   2,019.72x = 3,029.58 × 558.99
4. Step 4: Simplify right side
   2,019.72x = 1,693,504.92
5. Step 5: Solve for x
   x = 1,693,504.92/2,019.72
6. Step 6: Final answer
   x = 838.49