Finding the Fourth Proportional to 1,362.28, 1,879.56 and 838.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,362.28 : 1,879.56 = 838.18 : x
2. Step 2: Convert to fraction form
   1,362.28/1,879.56 = 838.18/x
3. Step 3: Cross multiply
   1,362.28x = 1,879.56 × 838.18
4. Step 4: Simplify right side
   1,362.28x = 1,575,409.60
5. Step 5: Solve for x
   x = 1,575,409.60/1,362.28
6. Step 6: Final answer
   x = 1,156.45