Finding the Fourth Proportional to 1,361.27, 1,878.63 and 801.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,361.27 : 1,878.63 = 801.61 : x
2. Step 2: Convert to fraction form
   1,361.27/1,878.63 = 801.61/x
3. Step 3: Cross multiply
   1,361.27x = 1,878.63 × 801.61
4. Step 4: Simplify right side
   1,361.27x = 1,505,928.59
5. Step 5: Solve for x
   x = 1,505,928.59/1,361.27
6. Step 6: Final answer
   x = 1,106.27