Finding the Fourth Proportional to 1,641.82, 2,463.76 and 667.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,641.82 : 2,463.76 = 667.92 : x
2. Step 2: Convert to fraction form
   1,641.82/2,463.76 = 667.92/x
3. Step 3: Cross multiply
   1,641.82x = 2,463.76 × 667.92
4. Step 4: Simplify right side
   1,641.82x = 1,645,591.24
5. Step 5: Solve for x
   x = 1,645,591.24/1,641.82
6. Step 6: Final answer
   x = 1,002.30