Finding the Fourth Proportional to 1,412.24, 1,945.86 and 1,018.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,412.24 : 1,945.86 = 1,018.58 : x
2. Step 2: Convert to fraction form
   1,412.24/1,945.86 = 1,018.58/x
3. Step 3: Cross multiply
   1,412.24x = 1,945.86 × 1,018.58
4. Step 4: Simplify right side
   1,412.24x = 1,982,014.08
5. Step 5: Solve for x
   x = 1,982,014.08/1,412.24
6. Step 6: Final answer
   x = 1,403.45