Finding the Fourth Proportional to 2,270.89, 3,133.50 and 1,276.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,270.89 : 3,133.50 = 1,276.12 : x
2. Step 2: Convert to fraction form
   2,270.89/3,133.50 = 1,276.12/x
3. Step 3: Cross multiply
   2,270.89x = 3,133.50 × 1,276.12
4. Step 4: Simplify right side
   2,270.89x = 3,998,706.35
5. Step 5: Solve for x
   x = 3,998,706.35/2,270.89
6. Step 6: Final answer
   x = 1,760.86