Finding the Fourth Proportional to 1,441.67, 1,989.53 and 803.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,441.67 : 1,989.53 = 803.63 : x
2. Step 2: Convert to fraction form
   1,441.67/1,989.53 = 803.63/x
3. Step 3: Cross multiply
   1,441.67x = 1,989.53 × 803.63
4. Step 4: Simplify right side
   1,441.67x = 1,598,832.03
5. Step 5: Solve for x
   x = 1,598,832.03/1,441.67
6. Step 6: Final answer
   x = 1,109.02