Finding the Fourth Proportional to 2,992.80, 4,488.74 and 1,144.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,992.80 : 4,488.74 = 1,144.78 : x
2. Step 2: Convert to fraction form
   2,992.80/4,488.74 = 1,144.78/x
3. Step 3: Cross multiply
   2,992.80x = 4,488.74 × 1,144.78
4. Step 4: Simplify right side
   2,992.80x = 5,138,619.78
5. Step 5: Solve for x
   x = 5,138,619.78/2,992.80
6. Step 6: Final answer
   x = 1,716.99