Finding the Fourth Proportional to 749.72, 1,034.61 and 413.61

Step by Step Solution

1. Step 1: Write the proportion equation
   749.72 : 1,034.61 = 413.61 : x
2. Step 2: Convert to fraction form
   749.72/1,034.61 = 413.61/x
3. Step 3: Cross multiply
   749.72x = 1,034.61 × 413.61
4. Step 4: Simplify right side
   749.72x = 427,928.86
5. Step 5: Solve for x
   x = 427,928.86/749.72
6. Step 6: Final answer
   x = 570.79