Finding the Fourth Proportional to 1,276.38, 1,761.12 and 804.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,276.38 : 1,761.12 = 804.42 : x
2. Step 2: Convert to fraction form
   1,276.38/1,761.12 = 804.42/x
3. Step 3: Cross multiply
   1,276.38x = 1,761.12 × 804.42
4. Step 4: Simplify right side
   1,276.38x = 1,416,680.15
5. Step 5: Solve for x
   x = 1,416,680.15/1,276.38
6. Step 6: Final answer
   x = 1,109.92