Finding the Fourth Proportional to 1,676.43, 2,514.78 and 522.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,676.43 : 2,514.78 = 522.18 : x
2. Step 2: Convert to fraction form
   1,676.43/2,514.78 = 522.18/x
3. Step 3: Cross multiply
   1,676.43x = 2,514.78 × 522.18
4. Step 4: Simplify right side
   1,676.43x = 1,313,167.82
5. Step 5: Solve for x
   x = 1,313,167.82/1,676.43
6. Step 6: Final answer
   x = 783.31