Finding the Fourth Proportional to 2,012.72, 3,018.76 and 551.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.72 : 3,018.76 = 551.96 : x
2. Step 2: Convert to fraction form
   2,012.72/3,018.76 = 551.96/x
3. Step 3: Cross multiply
   2,012.72x = 3,018.76 × 551.96
4. Step 4: Simplify right side
   2,012.72x = 1,666,234.77
5. Step 5: Solve for x
   x = 1,666,234.77/2,012.72
6. Step 6: Final answer
   x = 827.85