Finding the Fourth Proportional to 2,388.45, 3,295.98 and 1,643.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,388.45 : 3,295.98 = 1,643.25 : x
2. Step 2: Convert to fraction form
   2,388.45/3,295.98 = 1,643.25/x
3. Step 3: Cross multiply
   2,388.45x = 3,295.98 × 1,643.25
4. Step 4: Simplify right side
   2,388.45x = 5,416,119.14
5. Step 5: Solve for x
   x = 5,416,119.14/2,388.45
6. Step 6: Final answer
   x = 2,267.63