Finding the Fourth Proportional to 2,529.50, 3,791.39 and 1,211.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,529.50 : 3,791.39 = 1,211.43 : x
2. Step 2: Convert to fraction form
   2,529.50/3,791.39 = 1,211.43/x
3. Step 3: Cross multiply
   2,529.50x = 3,791.39 × 1,211.43
4. Step 4: Simplify right side
   2,529.50x = 4,593,007.90
5. Step 5: Solve for x
   x = 4,593,007.90/2,529.50
6. Step 6: Final answer
   x = 1,815.78