Finding the Fourth Proportional to 1,034.57, 1,550.53 and 485.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,034.57 : 1,550.53 = 485.54 : x
2. Step 2: Convert to fraction form
   1,034.57/1,550.53 = 485.54/x
3. Step 3: Cross multiply
   1,034.57x = 1,550.53 × 485.54
4. Step 4: Simplify right side
   1,034.57x = 752,844.34
5. Step 5: Solve for x
   x = 752,844.34/1,034.57
6. Step 6: Final answer
   x = 727.69