Finding the Fourth Proportional to 1,361.56, 1,879.02 and 802.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,361.56 : 1,879.02 = 802.20 : x
2. Step 2: Convert to fraction form
   1,361.56/1,879.02 = 802.20/x
3. Step 3: Cross multiply
   1,361.56x = 1,879.02 × 802.20
4. Step 4: Simplify right side
   1,361.56x = 1,507,359.15
5. Step 5: Solve for x
   x = 1,507,359.15/1,361.56
6. Step 6: Final answer
   x = 1,107.08