Finding the Fourth Proportional to 1,143.49, 1,714.17 and 622.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,143.49 : 1,714.17 = 622.72 : x
2. Step 2: Convert to fraction form
   1,143.49/1,714.17 = 622.72/x
3. Step 3: Cross multiply
   1,143.49x = 1,714.17 × 622.72
4. Step 4: Simplify right side
   1,143.49x = 1,067,447.94
5. Step 5: Solve for x
   x = 1,067,447.94/1,143.49
6. Step 6: Final answer
   x = 933.50