Finding the Fourth Proportional to 2,311.43, 3,187.80 and 1,723.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,311.43 : 3,187.80 = 1,723.37 : x
2. Step 2: Convert to fraction form
   2,311.43/3,187.80 = 1,723.37/x
3. Step 3: Cross multiply
   2,311.43x = 3,187.80 × 1,723.37
4. Step 4: Simplify right side
   2,311.43x = 5,493,742.95
5. Step 5: Solve for x
   x = 5,493,742.95/2,311.43
6. Step 6: Final answer
   x = 2,376.78