Finding the Fourth Proportional to 1,433.28, 1,977.88 and 803.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.28 : 1,977.88 = 803.83 : x
2. Step 2: Convert to fraction form
   1,433.28/1,977.88 = 803.83/x
3. Step 3: Cross multiply
   1,433.28x = 1,977.88 × 803.83
4. Step 4: Simplify right side
   1,433.28x = 1,589,879.28
5. Step 5: Solve for x
   x = 1,589,879.28/1,433.28
6. Step 6: Final answer
   x = 1,109.26