Finding the Fourth Proportional to 1,189.44, 1,639.83 and 834.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,189.44 : 1,639.83 = 834.88 : x
2. Step 2: Convert to fraction form
   1,189.44/1,639.83 = 834.88/x
3. Step 3: Cross multiply
   1,189.44x = 1,639.83 × 834.88
4. Step 4: Simplify right side
   1,189.44x = 1,369,061.27
5. Step 5: Solve for x
   x = 1,369,061.27/1,189.44
6. Step 6: Final answer
   x = 1,151.01