Finding the Fourth Proportional to 2,012.41, 3,018.78 and 551.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.41 : 3,018.78 = 551.68 : x
2. Step 2: Convert to fraction form
   2,012.41/3,018.78 = 551.68/x
3. Step 3: Cross multiply
   2,012.41x = 3,018.78 × 551.68
4. Step 4: Simplify right side
   2,012.41x = 1,665,400.55
5. Step 5: Solve for x
   x = 1,665,400.55/2,012.41
6. Step 6: Final answer
   x = 827.57