Finding the Fourth Proportional to 2,591.98, 3,886.79 and 742.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,591.98 : 3,886.79 = 742.67 : x
2. Step 2: Convert to fraction form
   2,591.98/3,886.79 = 742.67/x
3. Step 3: Cross multiply
   2,591.98x = 3,886.79 × 742.67
4. Step 4: Simplify right side
   2,591.98x = 2,886,582.90
5. Step 5: Solve for x
   x = 2,886,582.90/2,591.98
6. Step 6: Final answer
   x = 1,113.66