Finding the Fourth Proportional to 2,428.18, 3,642.49 and 1,041.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,428.18 : 3,642.49 = 1,041.20 : x
2. Step 2: Convert to fraction form
   2,428.18/3,642.49 = 1,041.20/x
3. Step 3: Cross multiply
   2,428.18x = 3,642.49 × 1,041.20
4. Step 4: Simplify right side
   2,428.18x = 3,792,557.34
5. Step 5: Solve for x
   x = 3,792,557.34/2,428.18
6. Step 6: Final answer
   x = 1,561.89