Finding the Fourth Proportional to 2,890.24, 4,326.72 and 1,966.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,890.24 : 4,326.72 = 1,966.72 : x
2. Step 2: Convert to fraction form
   2,890.24/4,326.72 = 1,966.72/x
3. Step 3: Cross multiply
   2,890.24x = 4,326.72 × 1,966.72
4. Step 4: Simplify right side
   2,890.24x = 8,509,446.76
5. Step 5: Solve for x
   x = 8,509,446.76/2,890.24
6. Step 6: Final answer
   x = 2,944.20