Finding the Fourth Proportional to 1,608.81, 2,219.33 and 1,050.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,608.81 : 2,219.33 = 1,050.21 : x
2. Step 2: Convert to fraction form
   1,608.81/2,219.33 = 1,050.21/x
3. Step 3: Cross multiply
   1,608.81x = 2,219.33 × 1,050.21
4. Step 4: Simplify right side
   1,608.81x = 2,330,757.31
5. Step 5: Solve for x
   x = 2,330,757.31/1,608.81
6. Step 6: Final answer
   x = 1,448.75