Finding the Fourth Proportional to 2,019.32, 3,030.19 and 865.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.32 : 3,030.19 = 865.07 : x
2. Step 2: Convert to fraction form
   2,019.32/3,030.19 = 865.07/x
3. Step 3: Cross multiply
   2,019.32x = 3,030.19 × 865.07
4. Step 4: Simplify right side
   2,019.32x = 2,621,306.99
5. Step 5: Solve for x
   x = 2,621,306.99/2,019.32
6. Step 6: Final answer
   x = 1,298.12