Finding the Fourth Proportional to 1,368.33, 1,890.81 and 1,036.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,368.33 : 1,890.81 = 1,036.20 : x
2. Step 2: Convert to fraction form
   1,368.33/1,890.81 = 1,036.20/x
3. Step 3: Cross multiply
   1,368.33x = 1,890.81 × 1,036.20
4. Step 4: Simplify right side
   1,368.33x = 1,959,257.32
5. Step 5: Solve for x
   x = 1,959,257.32/1,368.33
6. Step 6: Final answer
   x = 1,431.86