Finding the Fourth Proportional to 1,665.07, 2,297.65 and 918.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.07 : 2,297.65 = 918.84 : x
2. Step 2: Convert to fraction form
   1,665.07/2,297.65 = 918.84/x
3. Step 3: Cross multiply
   1,665.07x = 2,297.65 × 918.84
4. Step 4: Simplify right side
   1,665.07x = 2,111,172.73
5. Step 5: Solve for x
   x = 2,111,172.73/1,665.07
6. Step 6: Final answer
   x = 1,267.92