Finding the Fourth Proportional to 1,647.72, 2,471.94 and 673.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,647.72 : 2,471.94 = 673.92 : x
2. Step 2: Convert to fraction form
   1,647.72/2,471.94 = 673.92/x
3. Step 3: Cross multiply
   1,647.72x = 2,471.94 × 673.92
4. Step 4: Simplify right side
   1,647.72x = 1,665,889.80
5. Step 5: Solve for x
   x = 1,665,889.80/1,647.72
6. Step 6: Final answer
   x = 1,011.03