Finding the Fourth Proportional to 1,362.04, 1,879.74 and 838.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,362.04 : 1,879.74 = 838.28 : x
2. Step 2: Convert to fraction form
   1,362.04/1,879.74 = 838.28/x
3. Step 3: Cross multiply
   1,362.04x = 1,879.74 × 838.28
4. Step 4: Simplify right side
   1,362.04x = 1,575,748.45
5. Step 5: Solve for x
   x = 1,575,748.45/1,362.04
6. Step 6: Final answer
   x = 1,156.90