Finding the Fourth Proportional to 2,018.86, 3,028.23 and 558.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.86 : 3,028.23 = 558.01 : x
2. Step 2: Convert to fraction form
   2,018.86/3,028.23 = 558.01/x
3. Step 3: Cross multiply
   2,018.86x = 3,028.23 × 558.01
4. Step 4: Simplify right side
   2,018.86x = 1,689,782.62
5. Step 5: Solve for x
   x = 1,689,782.62/2,018.86
6. Step 6: Final answer
   x = 837.00