Finding the Fourth Proportional to 2,618.52, 3,929.46 and 1,079.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,618.52 : 3,929.46 = 1,079.48 : x
2. Step 2: Convert to fraction form
   2,618.52/3,929.46 = 1,079.48/x
3. Step 3: Cross multiply
   2,618.52x = 3,929.46 × 1,079.48
4. Step 4: Simplify right side
   2,618.52x = 4,241,773.48
5. Step 5: Solve for x
   x = 4,241,773.48/2,618.52
6. Step 6: Final answer
   x = 1,619.91