Finding the Fourth Proportional to 1,178.79, 1,766.34 and 745.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,178.79 : 1,766.34 = 745.03 : x
2. Step 2: Convert to fraction form
   1,178.79/1,766.34 = 745.03/x
3. Step 3: Cross multiply
   1,178.79x = 1,766.34 × 745.03
4. Step 4: Simplify right side
   1,178.79x = 1,315,978.50
5. Step 5: Solve for x
   x = 1,315,978.50/1,178.79
6. Step 6: Final answer
   x = 1,116.38