Finding the Fourth Proportional to 2,959.31, 4,439.57 and 1,011.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,959.31 : 4,439.57 = 1,011.67 : x
2. Step 2: Convert to fraction form
   2,959.31/4,439.57 = 1,011.67/x
3. Step 3: Cross multiply
   2,959.31x = 4,439.57 × 1,011.67
4. Step 4: Simplify right side
   2,959.31x = 4,491,379.78
5. Step 5: Solve for x
   x = 4,491,379.78/2,959.31
6. Step 6: Final answer
   x = 1,517.71