Finding the Fourth Proportional to 1,433.43, 1,978.07 and 803.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.43 : 1,978.07 = 803.88 : x
2. Step 2: Convert to fraction form
   1,433.43/1,978.07 = 803.88/x
3. Step 3: Cross multiply
   1,433.43x = 1,978.07 × 803.88
4. Step 4: Simplify right side
   1,433.43x = 1,590,126.89
5. Step 5: Solve for x
   x = 1,590,126.89/1,433.43
6. Step 6: Final answer
   x = 1,109.32