Finding the Fourth Proportional to 2,705.78, 4,055.60 and 1,144.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,705.78 : 4,055.60 = 1,144.81 : x
2. Step 2: Convert to fraction form
   2,705.78/4,055.60 = 1,144.81/x
3. Step 3: Cross multiply
   2,705.78x = 4,055.60 × 1,144.81
4. Step 4: Simplify right side
   2,705.78x = 4,642,882.79
5. Step 5: Solve for x
   x = 4,642,882.79/2,705.78
6. Step 6: Final answer
   x = 1,715.91