Finding the Fourth Proportional to 2,144.16, 2,961.72 and 1,772.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.16 : 2,961.72 = 1,772.64 : x
2. Step 2: Convert to fraction form
   2,144.16/2,961.72 = 1,772.64/x
3. Step 3: Cross multiply
   2,144.16x = 2,961.72 × 1,772.64
4. Step 4: Simplify right side
   2,144.16x = 5,250,063.34
5. Step 5: Solve for x
   x = 5,250,063.34/2,144.16
6. Step 6: Final answer
   x = 2,448.54