Finding the Fourth Proportional to 1,664.84, 2,297.31 and 918.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,664.84 : 2,297.31 = 918.83 : x
2. Step 2: Convert to fraction form
   1,664.84/2,297.31 = 918.83/x
3. Step 3: Cross multiply
   1,664.84x = 2,297.31 × 918.83
4. Step 4: Simplify right side
   1,664.84x = 2,110,825.86
5. Step 5: Solve for x
   x = 2,110,825.86/1,664.84
6. Step 6: Final answer
   x = 1,267.89