Finding the Fourth Proportional to 2,147.25, 2,963.76 and 1,216.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,147.25 : 2,963.76 = 1,216.29 : x
2. Step 2: Convert to fraction form
   2,147.25/2,963.76 = 1,216.29/x
3. Step 3: Cross multiply
   2,147.25x = 2,963.76 × 1,216.29
4. Step 4: Simplify right side
   2,147.25x = 3,604,791.65
5. Step 5: Solve for x
   x = 3,604,791.65/2,147.25
6. Step 6: Final answer
   x = 1,678.79