Finding the Fourth Proportional to 3,127.29, 4,686.88 and 1,276.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,127.29 : 4,686.88 = 1,276.27 : x
2. Step 2: Convert to fraction form
   3,127.29/4,686.88 = 1,276.27/x
3. Step 3: Cross multiply
   3,127.29x = 4,686.88 × 1,276.27
4. Step 4: Simplify right side
   3,127.29x = 5,981,724.34
5. Step 5: Solve for x
   x = 5,981,724.34/3,127.29
6. Step 6: Final answer
   x = 1,912.75