Finding the Fourth Proportional to 2,624.56, 3,936.88 and 676.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,624.56 : 3,936.88 = 676.72 : x
2. Step 2: Convert to fraction form
   2,624.56/3,936.88 = 676.72/x
3. Step 3: Cross multiply
   2,624.56x = 3,936.88 × 676.72
4. Step 4: Simplify right side
   2,624.56x = 2,664,165.43
5. Step 5: Solve for x
   x = 2,664,165.43/2,624.56
6. Step 6: Final answer
   x = 1,015.09