Finding the Fourth Proportional to 2,789.63, 4,185.08 and 1,058.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,789.63 : 4,185.08 = 1,058.25 : x
2. Step 2: Convert to fraction form
   2,789.63/4,185.08 = 1,058.25/x
3. Step 3: Cross multiply
   2,789.63x = 4,185.08 × 1,058.25
4. Step 4: Simplify right side
   2,789.63x = 4,428,860.91
5. Step 5: Solve for x
   x = 4,428,860.91/2,789.63
6. Step 6: Final answer
   x = 1,587.62