Finding the Fourth Proportional to 2,287.24, 3,428.52 and 1,055.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,287.24 : 3,428.52 = 1,055.56 : x
2. Step 2: Convert to fraction form
   2,287.24/3,428.52 = 1,055.56/x
3. Step 3: Cross multiply
   2,287.24x = 3,428.52 × 1,055.56
4. Step 4: Simplify right side
   2,287.24x = 3,619,008.57
5. Step 5: Solve for x
   x = 3,619,008.57/2,287.24
6. Step 6: Final answer
   x = 1,582.26