Finding the Fourth Proportional to 2,012.50, 3,018.61 and 551.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.50 : 3,018.61 = 551.67 : x
2. Step 2: Convert to fraction form
   2,012.50/3,018.61 = 551.67/x
3. Step 3: Cross multiply
   2,012.50x = 3,018.61 × 551.67
4. Step 4: Simplify right side
   2,012.50x = 1,665,276.58
5. Step 5: Solve for x
   x = 1,665,276.58/2,012.50
6. Step 6: Final answer
   x = 827.47