Finding the Fourth Proportional to 2,705.82, 4,058.49 and 1,145.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,705.82 : 4,058.49 = 1,145.10 : x
2. Step 2: Convert to fraction form
   2,705.82/4,058.49 = 1,145.10/x
3. Step 3: Cross multiply
   2,705.82x = 4,058.49 × 1,145.10
4. Step 4: Simplify right side
   2,705.82x = 4,647,376.90
5. Step 5: Solve for x
   x = 4,647,376.90/2,705.82
6. Step 6: Final answer
   x = 1,717.55