Finding the Fourth Proportional to 2,590.92, 3,885.74 and 742.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,590.92 : 3,885.74 = 742.05 : x
2. Step 2: Convert to fraction form
   2,590.92/3,885.74 = 742.05/x
3. Step 3: Cross multiply
   2,590.92x = 3,885.74 × 742.05
4. Step 4: Simplify right side
   2,590.92x = 2,883,413.37
5. Step 5: Solve for x
   x = 2,883,413.37/2,590.92
6. Step 6: Final answer
   x = 1,112.89