Finding the Fourth Proportional to 2,231.34, 3,079.41 and 1,236.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,231.34 : 3,079.41 = 1,236.71 : x
2. Step 2: Convert to fraction form
   2,231.34/3,079.41 = 1,236.71/x
3. Step 3: Cross multiply
   2,231.34x = 3,079.41 × 1,236.71
4. Step 4: Simplify right side
   2,231.34x = 3,808,329.84
5. Step 5: Solve for x
   x = 3,808,329.84/2,231.34
6. Step 6: Final answer
   x = 1,706.75