Finding the Fourth Proportional to 3,519.89, 5,279.52 and 1,055.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,519.89 : 5,279.52 = 1,055.27 : x
2. Step 2: Convert to fraction form
   3,519.89/5,279.52 = 1,055.27/x
3. Step 3: Cross multiply
   3,519.89x = 5,279.52 × 1,055.27
4. Step 4: Simplify right side
   3,519.89x = 5,571,292.67
5. Step 5: Solve for x
   x = 5,571,292.67/3,519.89
6. Step 6: Final answer
   x = 1,582.81