Finding the Fourth Proportional to 2,012.38, 3,018.86 and 625.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.38 : 3,018.86 = 625.83 : x
2. Step 2: Convert to fraction form
   2,012.38/3,018.86 = 625.83/x
3. Step 3: Cross multiply
   2,012.38x = 3,018.86 × 625.83
4. Step 4: Simplify right side
   2,012.38x = 1,889,281.05
5. Step 5: Solve for x
   x = 1,889,281.05/2,012.38
6. Step 6: Final answer
   x = 938.83