Finding the Fourth Proportional to 1,401.28, 1,933.73 and 803.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.28 : 1,933.73 = 803.86 : x
2. Step 2: Convert to fraction form
   1,401.28/1,933.73 = 803.86/x
3. Step 3: Cross multiply
   1,401.28x = 1,933.73 × 803.86
4. Step 4: Simplify right side
   1,401.28x = 1,554,444.18
5. Step 5: Solve for x
   x = 1,554,444.18/1,401.28
6. Step 6: Final answer
   x = 1,109.30