Finding the Fourth Proportional to 2,311.82, 3,190.24 and 2,123.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,311.82 : 3,190.24 = 2,123.56 : x
2. Step 2: Convert to fraction form
   2,311.82/3,190.24 = 2,123.56/x
3. Step 3: Cross multiply
   2,311.82x = 3,190.24 × 2,123.56
4. Step 4: Simplify right side
   2,311.82x = 6,774,666.05
5. Step 5: Solve for x
   x = 6,774,666.05/2,311.82
6. Step 6: Final answer
   x = 2,930.45