Finding the Fourth Proportional to 2,147.82, 3,223.71 and 1,663.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,147.82 : 3,223.71 = 1,663.98 : x
2. Step 2: Convert to fraction form
   2,147.82/3,223.71 = 1,663.98/x
3. Step 3: Cross multiply
   2,147.82x = 3,223.71 × 1,663.98
4. Step 4: Simplify right side
   2,147.82x = 5,364,188.97
5. Step 5: Solve for x
   x = 5,364,188.97/2,147.82
6. Step 6: Final answer
   x = 2,497.50