Finding the Fourth Proportional to 3,814.41, 5,711.90 and 1,861.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,814.41 : 5,711.90 = 1,861.50 : x
2. Step 2: Convert to fraction form
   3,814.41/5,711.90 = 1,861.50/x
3. Step 3: Cross multiply
   3,814.41x = 5,711.90 × 1,861.50
4. Step 4: Simplify right side
   3,814.41x = 10,632,692.54
5. Step 5: Solve for x
   x = 10,632,692.54/3,814.41
6. Step 6: Final answer
   x = 2,787.51