Finding the Fourth Proportional to 2,386.96, 3,578.52 and 1,019.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,386.96 : 3,578.52 = 1,019.92 : x
2. Step 2: Convert to fraction form
   2,386.96/3,578.52 = 1,019.92/x
3. Step 3: Cross multiply
   2,386.96x = 3,578.52 × 1,019.92
4. Step 4: Simplify right side
   2,386.96x = 3,649,804.12
5. Step 5: Solve for x
   x = 3,649,804.12/2,386.96
6. Step 6: Final answer
   x = 1,529.06