Finding the Fourth Proportional to 3,539.26, 5,307.86 and 1,074.09

Step by Step Solution

1. Step 1: Write the proportion equation
   3,539.26 : 5,307.86 = 1,074.09 : x
2. Step 2: Convert to fraction form
   3,539.26/5,307.86 = 1,074.09/x
3. Step 3: Cross multiply
   3,539.26x = 5,307.86 × 1,074.09
4. Step 4: Simplify right side
   3,539.26x = 5,701,141.94
5. Step 5: Solve for x
   x = 5,701,141.94/3,539.26
6. Step 6: Final answer
   x = 1,610.83