Finding the Fourth Proportional to 3,061.26, 4,221.72 and 2,011.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.26 : 4,221.72 = 2,011.50 : x
2. Step 2: Convert to fraction form
   3,061.26/4,221.72 = 2,011.50/x
3. Step 3: Cross multiply
   3,061.26x = 4,221.72 × 2,011.50
4. Step 4: Simplify right side
   3,061.26x = 8,491,989.78
5. Step 5: Solve for x
   x = 8,491,989.78/3,061.26
6. Step 6: Final answer
   x = 2,774.02