Finding the Fourth Proportional to 2,058.38, 3,085.77 and 758.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,058.38 : 3,085.77 = 758.78 : x
2. Step 2: Convert to fraction form
   2,058.38/3,085.77 = 758.78/x
3. Step 3: Cross multiply
   2,058.38x = 3,085.77 × 758.78
4. Step 4: Simplify right side
   2,058.38x = 2,341,420.56
5. Step 5: Solve for x
   x = 2,341,420.56/2,058.38
6. Step 6: Final answer
   x = 1,137.51