Finding the Fourth Proportional to 2,539.32, 3,809.56 and 1,078.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,539.32 : 3,809.56 = 1,078.52 : x
2. Step 2: Convert to fraction form
   2,539.32/3,809.56 = 1,078.52/x
3. Step 3: Cross multiply
   2,539.32x = 3,809.56 × 1,078.52
4. Step 4: Simplify right side
   2,539.32x = 4,108,686.65
5. Step 5: Solve for x
   x = 4,108,686.65/2,539.32
6. Step 6: Final answer
   x = 1,618.03