Finding the Fourth Proportional to 1,361.43, 1,880.33 and 918.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,361.43 : 1,880.33 = 918.56 : x
2. Step 2: Convert to fraction form
   1,361.43/1,880.33 = 918.56/x
3. Step 3: Cross multiply
   1,361.43x = 1,880.33 × 918.56
4. Step 4: Simplify right side
   1,361.43x = 1,727,196.03
5. Step 5: Solve for x
   x = 1,727,196.03/1,361.43
6. Step 6: Final answer
   x = 1,268.66