Finding the Fourth Proportional to 2,216.52, 3,059.09 and 1,272.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,216.52 : 3,059.09 = 1,272.47 : x
2. Step 2: Convert to fraction form
   2,216.52/3,059.09 = 1,272.47/x
3. Step 3: Cross multiply
   2,216.52x = 3,059.09 × 1,272.47
4. Step 4: Simplify right side
   2,216.52x = 3,892,594.84
5. Step 5: Solve for x
   x = 3,892,594.84/2,216.52
6. Step 6: Final answer
   x = 1,756.17