Finding the Fourth Proportional to 1,142.78, 1,714.25 and 362.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,142.78 : 1,714.25 = 362.77 : x
2. Step 2: Convert to fraction form
   1,142.78/1,714.25 = 362.77/x
3. Step 3: Cross multiply
   1,142.78x = 1,714.25 × 362.77
4. Step 4: Simplify right side
   1,142.78x = 621,872.37
5. Step 5: Solve for x
   x = 621,872.37/1,142.78
6. Step 6: Final answer
   x = 544.17