Finding the Fourth Proportional to 1,440.72, 2,162.22 and 1,008.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,440.72 : 2,162.22 = 1,008.24 : x
2. Step 2: Convert to fraction form
   1,440.72/2,162.22 = 1,008.24/x
3. Step 3: Cross multiply
   1,440.72x = 2,162.22 × 1,008.24
4. Step 4: Simplify right side
   1,440.72x = 2,180,036.69
5. Step 5: Solve for x
   x = 2,180,036.69/1,440.72
6. Step 6: Final answer
   x = 1,513.16