Finding the Fourth Proportional to 2,544.89, 3,819.42 and 1,085.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,544.89 : 3,819.42 = 1,085.13 : x
2. Step 2: Convert to fraction form
   2,544.89/3,819.42 = 1,085.13/x
3. Step 3: Cross multiply
   2,544.89x = 3,819.42 × 1,085.13
4. Step 4: Simplify right side
   2,544.89x = 4,144,567.22
5. Step 5: Solve for x
   x = 4,144,567.22/2,544.89
6. Step 6: Final answer
   x = 1,628.59