Finding the Fourth Proportional to 2,300.24, 3,172.20 and 1,662.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.24 : 3,172.20 = 1,662.80 : x
2. Step 2: Convert to fraction form
   2,300.24/3,172.20 = 1,662.80/x
3. Step 3: Cross multiply
   2,300.24x = 3,172.20 × 1,662.80
4. Step 4: Simplify right side
   2,300.24x = 5,274,734.16
5. Step 5: Solve for x
   x = 5,274,734.16/2,300.24
6. Step 6: Final answer
   x = 2,293.12