Finding the Fourth Proportional to 1,178.47, 1,626.41 and 674.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,178.47 : 1,626.41 = 674.37 : x
2. Step 2: Convert to fraction form
   1,178.47/1,626.41 = 674.37/x
3. Step 3: Cross multiply
   1,178.47x = 1,626.41 × 674.37
4. Step 4: Simplify right side
   1,178.47x = 1,096,793.98
5. Step 5: Solve for x
   x = 1,096,793.98/1,178.47
6. Step 6: Final answer
   x = 930.70