Finding the Fourth Proportional to 2,147.52, 2,963.56 and 1,216

Step by Step Solution

1. Step 1: Write the proportion equation
   2,147.52 : 2,963.56 = 1,216 : x
2. Step 2: Convert to fraction form
   2,147.52/2,963.56 = 1,216/x
3. Step 3: Cross multiply
   2,147.52x = 2,963.56 × 1,216
4. Step 4: Simplify right side
   2,147.52x = 3,603,688.96
5. Step 5: Solve for x
   x = 3,603,688.96/2,147.52
6. Step 6: Final answer
   x = 1,678.07