Finding the Fourth Proportional to 2,015.69, 3,024.09 and 919.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,015.69 : 3,024.09 = 919.13 : x
2. Step 2: Convert to fraction form
   2,015.69/3,024.09 = 919.13/x
3. Step 3: Cross multiply
   2,015.69x = 3,024.09 × 919.13
4. Step 4: Simplify right side
   2,015.69x = 2,779,516.72
5. Step 5: Solve for x
   x = 2,779,516.72/2,015.69
6. Step 6: Final answer
   x = 1,378.94