Finding the Fourth Proportional to 2,428.50, 3,642.78 and 1,455.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,428.50 : 3,642.78 = 1,455.36 : x
2. Step 2: Convert to fraction form
   2,428.50/3,642.78 = 1,455.36/x
3. Step 3: Cross multiply
   2,428.50x = 3,642.78 × 1,455.36
4. Step 4: Simplify right side
   2,428.50x = 5,301,556.30
5. Step 5: Solve for x
   x = 5,301,556.30/2,428.50
6. Step 6: Final answer
   x = 2,183.06