Finding the Fourth Proportional to 3,172.30, 4,755.69 and 1,223.14

Step by Step Solution

1. Step 1: Write the proportion equation
   3,172.30 : 4,755.69 = 1,223.14 : x
2. Step 2: Convert to fraction form
   3,172.30/4,755.69 = 1,223.14/x
3. Step 3: Cross multiply
   3,172.30x = 4,755.69 × 1,223.14
4. Step 4: Simplify right side
   3,172.30x = 5,816,874.67
5. Step 5: Solve for x
   x = 5,816,874.67/3,172.30
6. Step 6: Final answer
   x = 1,833.65