Finding the Fourth Proportional to 3,280.14, 4,919.05 and 1,058.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,280.14 : 4,919.05 = 1,058.89 : x
2. Step 2: Convert to fraction form
   3,280.14/4,919.05 = 1,058.89/x
3. Step 3: Cross multiply
   3,280.14x = 4,919.05 × 1,058.89
4. Step 4: Simplify right side
   3,280.14x = 5,208,732.85
5. Step 5: Solve for x
   x = 5,208,732.85/3,280.14
6. Step 6: Final answer
   x = 1,587.96