Finding the Fourth Proportional to 2,311.56, 3,189.78 and 1,367.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,311.56 : 3,189.78 = 1,367.46 : x
2. Step 2: Convert to fraction form
   2,311.56/3,189.78 = 1,367.46/x
3. Step 3: Cross multiply
   2,311.56x = 3,189.78 × 1,367.46
4. Step 4: Simplify right side
   2,311.56x = 4,361,896.56
5. Step 5: Solve for x
   x = 4,361,896.56/2,311.56
6. Step 6: Final answer
   x = 1,886.99