Finding the Fourth Proportional to 5,676.57, 8,514.18 and 1,978.49

Step by Step Solution

1. Step 1: Write the proportion equation
   5,676.57 : 8,514.18 = 1,978.49 : x
2. Step 2: Convert to fraction form
   5,676.57/8,514.18 = 1,978.49/x
3. Step 3: Cross multiply
   5,676.57x = 8,514.18 × 1,978.49
4. Step 4: Simplify right side
   5,676.57x = 16,845,241.27
5. Step 5: Solve for x
   x = 16,845,241.27/5,676.57
6. Step 6: Final answer
   x = 2,967.50