Finding the Fourth Proportional to 1,641.54, 2,462.98 and 667.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,641.54 : 2,462.98 = 667.72 : x
2. Step 2: Convert to fraction form
   1,641.54/2,462.98 = 667.72/x
3. Step 3: Cross multiply
   1,641.54x = 2,462.98 × 667.72
4. Step 4: Simplify right side
   1,641.54x = 1,644,581.01
5. Step 5: Solve for x
   x = 1,644,581.01/1,641.54
6. Step 6: Final answer
   x = 1,001.85