Finding the Fourth Proportional to 1,181.98, 1,631.51 and 804.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,181.98 : 1,631.51 = 804.12 : x
2. Step 2: Convert to fraction form
   1,181.98/1,631.51 = 804.12/x
3. Step 3: Cross multiply
   1,181.98x = 1,631.51 × 804.12
4. Step 4: Simplify right side
   1,181.98x = 1,311,929.82
5. Step 5: Solve for x
   x = 1,311,929.82/1,181.98
6. Step 6: Final answer
   x = 1,109.94