Finding the Fourth Proportional to 3,414.86, 5,121.55 and 1,074.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,414.86 : 5,121.55 = 1,074.57 : x
2. Step 2: Convert to fraction form
   3,414.86/5,121.55 = 1,074.57/x
3. Step 3: Cross multiply
   3,414.86x = 5,121.55 × 1,074.57
4. Step 4: Simplify right side
   3,414.86x = 5,503,449.14
5. Step 5: Solve for x
   x = 5,503,449.14/3,414.86
6. Step 6: Final answer
   x = 1,611.62