Finding the Fourth Proportional to 3,979.34, 5,491.71 and 2,210.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,979.34 : 5,491.71 = 2,210.96 : x
2. Step 2: Convert to fraction form
   3,979.34/5,491.71 = 2,210.96/x
3. Step 3: Cross multiply
   3,979.34x = 5,491.71 × 2,210.96
4. Step 4: Simplify right side
   3,979.34x = 12,141,951.14
5. Step 5: Solve for x
   x = 12,141,951.14/3,979.34
6. Step 6: Final answer
   x = 3,051.25