Finding the Fourth Proportional to 1,143.22, 1,577.89 and 677.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,143.22 : 1,577.89 = 677.54 : x
2. Step 2: Convert to fraction form
   1,143.22/1,577.89 = 677.54/x
3. Step 3: Cross multiply
   1,143.22x = 1,577.89 × 677.54
4. Step 4: Simplify right side
   1,143.22x = 1,069,083.59
5. Step 5: Solve for x
   x = 1,069,083.59/1,143.22
6. Step 6: Final answer
   x = 935.15