Finding the Fourth Proportional to 2,739.76, 4,109.86 and 890.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,739.76 : 4,109.86 = 890.83 : x
2. Step 2: Convert to fraction form
   2,739.76/4,109.86 = 890.83/x
3. Step 3: Cross multiply
   2,739.76x = 4,109.86 × 890.83
4. Step 4: Simplify right side
   2,739.76x = 3,661,192.83
5. Step 5: Solve for x
   x = 3,661,192.83/2,739.76
6. Step 6: Final answer
   x = 1,336.32