Finding the Fourth Proportional to 5,676.55, 8,514.61 and 1,978.76

Step by Step Solution

1. Step 1: Write the proportion equation
   5,676.55 : 8,514.61 = 1,978.76 : x
2. Step 2: Convert to fraction form
   5,676.55/8,514.61 = 1,978.76/x
3. Step 3: Cross multiply
   5,676.55x = 8,514.61 × 1,978.76
4. Step 4: Simplify right side
   5,676.55x = 16,848,386.02
5. Step 5: Solve for x
   x = 16,848,386.02/5,676.55
6. Step 6: Final answer
   x = 2,968.07