Finding the Fourth Proportional to 2,740.12, 4,109.22 and 890.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,740.12 : 4,109.22 = 890.89 : x
2. Step 2: Convert to fraction form
   2,740.12/4,109.22 = 890.89/x
3. Step 3: Cross multiply
   2,740.12x = 4,109.22 × 890.89
4. Step 4: Simplify right side
   2,740.12x = 3,660,852.73
5. Step 5: Solve for x
   x = 3,660,852.73/2,740.12
6. Step 6: Final answer
   x = 1,336.02