Finding the Fourth Proportional to 1,441.51, 1,989.25 and 812.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,441.51 : 1,989.25 = 812.03 : x
2. Step 2: Convert to fraction form
   1,441.51/1,989.25 = 812.03/x
3. Step 3: Cross multiply
   1,441.51x = 1,989.25 × 812.03
4. Step 4: Simplify right side
   1,441.51x = 1,615,330.68
5. Step 5: Solve for x
   x = 1,615,330.68/1,441.51
6. Step 6: Final answer
   x = 1,120.59