Finding the Fourth Proportional to 2,826.72, 4,256.10 and 1,966.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,826.72 : 4,256.10 = 1,966.50 : x
2. Step 2: Convert to fraction form
   2,826.72/4,256.10 = 1,966.50/x
3. Step 3: Cross multiply
   2,826.72x = 4,256.10 × 1,966.50
4. Step 4: Simplify right side
   2,826.72x = 8,369,620.65
5. Step 5: Solve for x
   x = 8,369,620.65/2,826.72
6. Step 6: Final answer
   x = 2,960.89