Finding the Fourth Proportional to 1,281.69, 1,919.46 and 1,019.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,281.69 : 1,919.46 = 1,019.88 : x
2. Step 2: Convert to fraction form
   1,281.69/1,919.46 = 1,019.88/x
3. Step 3: Cross multiply
   1,281.69x = 1,919.46 × 1,019.88
4. Step 4: Simplify right side
   1,281.69x = 1,957,618.86
5. Step 5: Solve for x
   x = 1,957,618.86/1,281.69
6. Step 6: Final answer
   x = 1,527.37