Finding the Fourth Proportional to 1,665.09, 2,297.73 and 918.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.09 : 2,297.73 = 918.96 : x
2. Step 2: Convert to fraction form
   1,665.09/2,297.73 = 918.96/x
3. Step 3: Cross multiply
   1,665.09x = 2,297.73 × 918.96
4. Step 4: Simplify right side
   1,665.09x = 2,111,521.96
5. Step 5: Solve for x
   x = 2,111,521.96/1,665.09
6. Step 6: Final answer
   x = 1,268.11