Finding the Fourth Proportional to 3,009.78, 4,514.94 and 818.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,009.78 : 4,514.94 = 818.52 : x
2. Step 2: Convert to fraction form
   3,009.78/4,514.94 = 818.52/x
3. Step 3: Cross multiply
   3,009.78x = 4,514.94 × 818.52
4. Step 4: Simplify right side
   3,009.78x = 3,695,568.69
5. Step 5: Solve for x
   x = 3,695,568.69/3,009.78
6. Step 6: Final answer
   x = 1,227.85