Finding the Fourth Proportional to 2,772.15, 4,152.15 and 2,150.97

Step by Step Solution

1. Step 1: Write the proportion equation
   2,772.15 : 4,152.15 = 2,150.97 : x
2. Step 2: Convert to fraction form
   2,772.15/4,152.15 = 2,150.97/x
3. Step 3: Cross multiply
   2,772.15x = 4,152.15 × 2,150.97
4. Step 4: Simplify right side
   2,772.15x = 8,931,150.09
5. Step 5: Solve for x
   x = 8,931,150.09/2,772.15
6. Step 6: Final answer
   x = 3,221.74