Finding the Fourth Proportional to 2,311.89, 3,187.06 and 1,524.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,311.89 : 3,187.06 = 1,524.57 : x
2. Step 2: Convert to fraction form
   2,311.89/3,187.06 = 1,524.57/x
3. Step 3: Cross multiply
   2,311.89x = 3,187.06 × 1,524.57
4. Step 4: Simplify right side
   2,311.89x = 4,858,896.06
5. Step 5: Solve for x
   x = 4,858,896.06/2,311.89
6. Step 6: Final answer
   x = 2,101.70