Finding the Fourth Proportional to 2,621.56, 3,932.38 and 673.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.56 : 3,932.38 = 673.72 : x
2. Step 2: Convert to fraction form
   2,621.56/3,932.38 = 673.72/x
3. Step 3: Cross multiply
   2,621.56x = 3,932.38 × 673.72
4. Step 4: Simplify right side
   2,621.56x = 2,649,323.05
5. Step 5: Solve for x
   x = 2,649,323.05/2,621.56
6. Step 6: Final answer
   x = 1,010.59