Finding the Fourth Proportional to 1,369.27, 1,889.90 and 838.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,369.27 : 1,889.90 = 838.27 : x
2. Step 2: Convert to fraction form
   1,369.27/1,889.90 = 838.27/x
3. Step 3: Cross multiply
   1,369.27x = 1,889.90 × 838.27
4. Step 4: Simplify right side
   1,369.27x = 1,584,246.47
5. Step 5: Solve for x
   x = 1,584,246.47/1,369.27
6. Step 6: Final answer
   x = 1,157.00