Finding the Fourth Proportional to 1,609.43, 2,220.50 and 1,050.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,609.43 : 2,220.50 = 1,050.69 : x
2. Step 2: Convert to fraction form
   1,609.43/2,220.50 = 1,050.69/x
3. Step 3: Cross multiply
   1,609.43x = 2,220.50 × 1,050.69
4. Step 4: Simplify right side
   1,609.43x = 2,333,051.89
5. Step 5: Solve for x
   x = 2,333,051.89/1,609.43
6. Step 6: Final answer
   x = 1,449.62