Finding the Fourth Proportional to 1,361.88, 1,879.65 and 802.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,361.88 : 1,879.65 = 802.82 : x
2. Step 2: Convert to fraction form
   1,361.88/1,879.65 = 802.82/x
3. Step 3: Cross multiply
   1,361.88x = 1,879.65 × 802.82
4. Step 4: Simplify right side
   1,361.88x = 1,509,025.31
5. Step 5: Solve for x
   x = 1,509,025.31/1,361.88
6. Step 6: Final answer
   x = 1,108.05