Finding the Fourth Proportional to 1,167.31, 1,747.78 and 755.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,167.31 : 1,747.78 = 755.43 : x
2. Step 2: Convert to fraction form
   1,167.31/1,747.78 = 755.43/x
3. Step 3: Cross multiply
   1,167.31x = 1,747.78 × 755.43
4. Step 4: Simplify right side
   1,167.31x = 1,320,317.00
5. Step 5: Solve for x
   x = 1,320,317.00/1,167.31
6. Step 6: Final answer
   x = 1,131.08