Finding the Fourth Proportional to 3,518.10, 5,275.87 and 1,052.09

Step by Step Solution

1. Step 1: Write the proportion equation
   3,518.10 : 5,275.87 = 1,052.09 : x
2. Step 2: Convert to fraction form
   3,518.10/5,275.87 = 1,052.09/x
3. Step 3: Cross multiply
   3,518.10x = 5,275.87 × 1,052.09
4. Step 4: Simplify right side
   3,518.10x = 5,550,658.43
5. Step 5: Solve for x
   x = 5,550,658.43/3,518.10
6. Step 6: Final answer
   x = 1,577.75