Finding the Fourth Proportional to 1,361.71, 1,879.01 and 802.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,361.71 : 1,879.01 = 802.15 : x
2. Step 2: Convert to fraction form
   1,361.71/1,879.01 = 802.15/x
3. Step 3: Cross multiply
   1,361.71x = 1,879.01 × 802.15
4. Step 4: Simplify right side
   1,361.71x = 1,507,247.87
5. Step 5: Solve for x
   x = 1,507,247.87/1,361.71
6. Step 6: Final answer
   x = 1,106.88