Finding the Fourth Proportional to 1,304.53, 1,799.89 and 839.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,304.53 : 1,799.89 = 839.05 : x
2. Step 2: Convert to fraction form
   1,304.53/1,799.89 = 839.05/x
3. Step 3: Cross multiply
   1,304.53x = 1,799.89 × 839.05
4. Step 4: Simplify right side
   1,304.53x = 1,510,197.70
5. Step 5: Solve for x
   x = 1,510,197.70/1,304.53
6. Step 6: Final answer
   x = 1,157.66