Finding the Fourth Proportional to 2,171.16, 3,254.72 and 1,293.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,171.16 : 3,254.72 = 1,293.89 : x
2. Step 2: Convert to fraction form
   2,171.16/3,254.72 = 1,293.89/x
3. Step 3: Cross multiply
   2,171.16x = 3,254.72 × 1,293.89
4. Step 4: Simplify right side
   2,171.16x = 4,211,226.92
5. Step 5: Solve for x
   x = 4,211,226.92/2,171.16
6. Step 6: Final answer
   x = 1,939.62