Finding the Fourth Proportional to 2,867.86, 4,302.12 and 1,019.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,867.86 : 4,302.12 = 1,019.15 : x
2. Step 2: Convert to fraction form
   2,867.86/4,302.12 = 1,019.15/x
3. Step 3: Cross multiply
   2,867.86x = 4,302.12 × 1,019.15
4. Step 4: Simplify right side
   2,867.86x = 4,384,505.60
5. Step 5: Solve for x
   x = 4,384,505.60/2,867.86
6. Step 6: Final answer
   x = 1,528.84