Finding the Fourth Proportional to 2,618.38, 3,926.55 and 1,058.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,618.38 : 3,926.55 = 1,058.10 : x
2. Step 2: Convert to fraction form
   2,618.38/3,926.55 = 1,058.10/x
3. Step 3: Cross multiply
   2,618.38x = 3,926.55 × 1,058.10
4. Step 4: Simplify right side
   2,618.38x = 4,154,682.56
5. Step 5: Solve for x
   x = 4,154,682.56/2,618.38
6. Step 6: Final answer
   x = 1,586.74