Finding the Fourth Proportional to 2,147.76, 2,960.42 and 1,622.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,147.76 : 2,960.42 = 1,622.88 : x
2. Step 2: Convert to fraction form
   2,147.76/2,960.42 = 1,622.88/x
3. Step 3: Cross multiply
   2,147.76x = 2,960.42 × 1,622.88
4. Step 4: Simplify right side
   2,147.76x = 4,804,398.30
5. Step 5: Solve for x
   x = 4,804,398.30/2,147.76
6. Step 6: Final answer
   x = 2,236.93