Finding the Fourth Proportional to 2,613.50, 3,920.82 and 1,074.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.50 : 3,920.82 = 1,074.50 : x
2. Step 2: Convert to fraction form
   2,613.50/3,920.82 = 1,074.50/x
3. Step 3: Cross multiply
   2,613.50x = 3,920.82 × 1,074.50
4. Step 4: Simplify right side
   2,613.50x = 4,212,921.09
5. Step 5: Solve for x
   x = 4,212,921.09/2,613.50
6. Step 6: Final answer
   x = 1,611.98