Finding the Fourth Proportional to 5,676.50, 8,514.77 and 1,978.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,676.50 : 8,514.77 = 1,978.72 : x
2. Step 2: Convert to fraction form
   5,676.50/8,514.77 = 1,978.72/x
3. Step 3: Cross multiply
   5,676.50x = 8,514.77 × 1,978.72
4. Step 4: Simplify right side
   5,676.50x = 16,848,349.59
5. Step 5: Solve for x
   x = 16,848,349.59/5,676.50
6. Step 6: Final answer
   x = 2,968.09