Finding the Fourth Proportional to 2,015.98, 3,023.89 and 555.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,015.98 : 3,023.89 = 555.12 : x
2. Step 2: Convert to fraction form
   2,015.98/3,023.89 = 555.12/x
3. Step 3: Cross multiply
   2,015.98x = 3,023.89 × 555.12
4. Step 4: Simplify right side
   2,015.98x = 1,678,620.43
5. Step 5: Solve for x
   x = 1,678,620.43/2,015.98
6. Step 6: Final answer
   x = 832.66