Finding the Fourth Proportional to 1,048.55, 1,571.06 and 739.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,048.55 : 1,571.06 = 739.89 : x
2. Step 2: Convert to fraction form
   1,048.55/1,571.06 = 739.89/x
3. Step 3: Cross multiply
   1,048.55x = 1,571.06 × 739.89
4. Step 4: Simplify right side
   1,048.55x = 1,162,413.43
5. Step 5: Solve for x
   x = 1,162,413.43/1,048.55
6. Step 6: Final answer
   x = 1,108.60