Finding the Fourth Proportional to 1,441.14, 2,162.52 and 921.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,441.14 : 2,162.52 = 921.12 : x
2. Step 2: Convert to fraction form
   1,441.14/2,162.52 = 921.12/x
3. Step 3: Cross multiply
   1,441.14x = 2,162.52 × 921.12
4. Step 4: Simplify right side
   1,441.14x = 1,991,940.42
5. Step 5: Solve for x
   x = 1,991,940.42/1,441.14
6. Step 6: Final answer
   x = 1,382.20