Finding the Fourth Proportional to 1,440.24, 1,986.84 and 1,026.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,440.24 : 1,986.84 = 1,026.48 : x
2. Step 2: Convert to fraction form
   1,440.24/1,986.84 = 1,026.48/x
3. Step 3: Cross multiply
   1,440.24x = 1,986.84 × 1,026.48
4. Step 4: Simplify right side
   1,440.24x = 2,039,451.52
5. Step 5: Solve for x
   x = 2,039,451.52/1,440.24
6. Step 6: Final answer
   x = 1,416.05