Finding the Fourth Proportional to 738.89, 1,108.18 and 348.72

Step by Step Solution

1. Step 1: Write the proportion equation
   738.89 : 1,108.18 = 348.72 : x
2. Step 2: Convert to fraction form
   738.89/1,108.18 = 348.72/x
3. Step 3: Cross multiply
   738.89x = 1,108.18 × 348.72
4. Step 4: Simplify right side
   738.89x = 386,447.04
5. Step 5: Solve for x
   x = 386,447.04/738.89
6. Step 6: Final answer
   x = 523.01