Finding the Fourth Proportional to 1,166.89, 1,609.25 and 773.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,166.89 : 1,609.25 = 773.23 : x
2. Step 2: Convert to fraction form
   1,166.89/1,609.25 = 773.23/x
3. Step 3: Cross multiply
   1,166.89x = 1,609.25 × 773.23
4. Step 4: Simplify right side
   1,166.89x = 1,244,315.51
5. Step 5: Solve for x
   x = 1,244,315.51/1,166.89
6. Step 6: Final answer
   x = 1,066.35