Finding the Fourth Proportional to 1,164.55, 1,745.71 and 818.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,164.55 : 1,745.71 = 818.68 : x
2. Step 2: Convert to fraction form
   1,164.55/1,745.71 = 818.68/x
3. Step 3: Cross multiply
   1,164.55x = 1,745.71 × 818.68
4. Step 4: Simplify right side
   1,164.55x = 1,429,171.45
5. Step 5: Solve for x
   x = 1,429,171.45/1,164.55
6. Step 6: Final answer
   x = 1,227.23