Finding the Fourth Proportional to 1,609.72, 2,220.77 and 1,050.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,609.72 : 2,220.77 = 1,050.00 : x
2. Step 2: Convert to fraction form
   1,609.72/2,220.77 = 1,050.00/x
3. Step 3: Cross multiply
   1,609.72x = 2,220.77 × 1,050.00
4. Step 4: Simplify right side
   1,609.72x = 2,331,796.89
5. Step 5: Solve for x
   x = 2,331,796.89/1,609.72
6. Step 6: Final answer
   x = 1,448.57