Finding the Fourth Proportional to 2,147.56, 2,963.52 and 1,216

Step by Step Solution

1. Step 1: Write the proportion equation
   2,147.56 : 2,963.52 = 1,216 : x
2. Step 2: Convert to fraction form
   2,147.56/2,963.52 = 1,216/x
3. Step 3: Cross multiply
   2,147.56x = 2,963.52 × 1,216
4. Step 4: Simplify right side
   2,147.56x = 3,603,640.32
5. Step 5: Solve for x
   x = 3,603,640.32/2,147.56
6. Step 6: Final answer
   x = 1,678.02