Finding the Fourth Proportional to 2,520.18, 3,780.81 and 1,058.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,520.18 : 3,780.81 = 1,058.49 : x
2. Step 2: Convert to fraction form
   2,520.18/3,780.81 = 1,058.49/x
3. Step 3: Cross multiply
   2,520.18x = 3,780.81 × 1,058.49
4. Step 4: Simplify right side
   2,520.18x = 4,001,949.58
5. Step 5: Solve for x
   x = 4,001,949.58/2,520.18
6. Step 6: Final answer
   x = 1,587.96