Finding the Fourth Proportional to 1,433.33, 1,978.02 and 803.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.33 : 1,978.02 = 803.89 : x
2. Step 2: Convert to fraction form
   1,433.33/1,978.02 = 803.89/x
3. Step 3: Cross multiply
   1,433.33x = 1,978.02 × 803.89
4. Step 4: Simplify right side
   1,433.33x = 1,590,112.97
5. Step 5: Solve for x
   x = 1,590,112.97/1,433.33
6. Step 6: Final answer
   x = 1,109.38