Finding the Fourth Proportional to 1,472.35, 2,208.72 and 485.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,472.35 : 2,208.72 = 485.27 : x
2. Step 2: Convert to fraction form
   1,472.35/2,208.72 = 485.27/x
3. Step 3: Cross multiply
   1,472.35x = 2,208.72 × 485.27
4. Step 4: Simplify right side
   1,472.35x = 1,071,818.78
5. Step 5: Solve for x
   x = 1,071,818.78/1,472.35
6. Step 6: Final answer
   x = 727.96