Finding the Fourth Proportional to 2,150.45, 3,221.46 and 1,223.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.45 : 3,221.46 = 1,223.18 : x
2. Step 2: Convert to fraction form
   2,150.45/3,221.46 = 1,223.18/x
3. Step 3: Cross multiply
   2,150.45x = 3,221.46 × 1,223.18
4. Step 4: Simplify right side
   2,150.45x = 3,940,409.34
5. Step 5: Solve for x
   x = 3,940,409.34/2,150.45
6. Step 6: Final answer
   x = 1,832.37