Finding the Fourth Proportional to 2,012.08, 3,018.55 and 625.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.08 : 3,018.55 = 625.39 : x
2. Step 2: Convert to fraction form
   2,012.08/3,018.55 = 625.39/x
3. Step 3: Cross multiply
   2,012.08x = 3,018.55 × 625.39
4. Step 4: Simplify right side
   2,012.08x = 1,887,755.89
5. Step 5: Solve for x
   x = 1,887,755.89/2,012.08
6. Step 6: Final answer
   x = 938.21