Finding the Fourth Proportional to 1,180.07, 1,626.81 and 806.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,180.07 : 1,626.81 = 806.46 : x
2. Step 2: Convert to fraction form
   1,180.07/1,626.81 = 806.46/x
3. Step 3: Cross multiply
   1,180.07x = 1,626.81 × 806.46
4. Step 4: Simplify right side
   1,180.07x = 1,311,950.34
5. Step 5: Solve for x
   x = 1,311,950.34/1,180.07
6. Step 6: Final answer
   x = 1,111.76