Finding the Fourth Proportional to 2,012.62, 3,018.61 and 551.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.62 : 3,018.61 = 551.88 : x
2. Step 2: Convert to fraction form
   2,012.62/3,018.61 = 551.88/x
3. Step 3: Cross multiply
   2,012.62x = 3,018.61 × 551.88
4. Step 4: Simplify right side
   2,012.62x = 1,665,910.49
5. Step 5: Solve for x
   x = 1,665,910.49/2,012.62
6. Step 6: Final answer
   x = 827.73