Finding the Fourth Proportional to 1,178.56, 1,626.63 and 674.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,178.56 : 1,626.63 = 674.41 : x
2. Step 2: Convert to fraction form
   1,178.56/1,626.63 = 674.41/x
3. Step 3: Cross multiply
   1,178.56x = 1,626.63 × 674.41
4. Step 4: Simplify right side
   1,178.56x = 1,097,015.54
5. Step 5: Solve for x
   x = 1,097,015.54/1,178.56
6. Step 6: Final answer
   x = 930.81