Finding the Fourth Proportional to 3,640.50, 5,456.43 and 1,663.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,640.50 : 5,456.43 = 1,663.88 : x
2. Step 2: Convert to fraction form
   3,640.50/5,456.43 = 1,663.88/x
3. Step 3: Cross multiply
   3,640.50x = 5,456.43 × 1,663.88
4. Step 4: Simplify right side
   3,640.50x = 9,078,817.47
5. Step 5: Solve for x
   x = 9,078,817.47/3,640.50
6. Step 6: Final answer
   x = 2,493.84