Finding the Fourth Proportional to 2,147.52, 3,219.42 and 848.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,147.52 : 3,219.42 = 848.28 : x
2. Step 2: Convert to fraction form
   2,147.52/3,219.42 = 848.28/x
3. Step 3: Cross multiply
   2,147.52x = 3,219.42 × 848.28
4. Step 4: Simplify right side
   2,147.52x = 2,730,969.60
5. Step 5: Solve for x
   x = 2,730,969.60/2,147.52
6. Step 6: Final answer
   x = 1,271.69