Finding the Fourth Proportional to 2,690.96, 4,036.59 and 716.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,690.96 : 4,036.59 = 716.55 : x
2. Step 2: Convert to fraction form
   2,690.96/4,036.59 = 716.55/x
3. Step 3: Cross multiply
   2,690.96x = 4,036.59 × 716.55
4. Step 4: Simplify right side
   2,690.96x = 2,892,418.56
5. Step 5: Solve for x
   x = 2,892,418.56/2,690.96
6. Step 6: Final answer
   x = 1,074.87