Finding the Fourth Proportional to 3,219.52, 4,828.06 and 1,139.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,219.52 : 4,828.06 = 1,139.16 : x
2. Step 2: Convert to fraction form
   3,219.52/4,828.06 = 1,139.16/x
3. Step 3: Cross multiply
   3,219.52x = 4,828.06 × 1,139.16
4. Step 4: Simplify right side
   3,219.52x = 5,499,932.83
5. Step 5: Solve for x
   x = 5,499,932.83/3,219.52
6. Step 6: Final answer
   x = 1,708.31