Finding the Fourth Proportional to 2,788.73, 4,182.98 and 1,145.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,788.73 : 4,182.98 = 1,145.23 : x
2. Step 2: Convert to fraction form
   2,788.73/4,182.98 = 1,145.23/x
3. Step 3: Cross multiply
   2,788.73x = 4,182.98 × 1,145.23
4. Step 4: Simplify right side
   2,788.73x = 4,790,483.42
5. Step 5: Solve for x
   x = 4,790,483.42/2,788.73
6. Step 6: Final answer
   x = 1,717.80