Finding the Fourth Proportional to 1,435.92, 1,981.48 and 806.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.92 : 1,981.48 = 806.56 : x
2. Step 2: Convert to fraction form
   1,435.92/1,981.48 = 806.56/x
3. Step 3: Cross multiply
   1,435.92x = 1,981.48 × 806.56
4. Step 4: Simplify right side
   1,435.92x = 1,598,182.51
5. Step 5: Solve for x
   x = 1,598,182.51/1,435.92
6. Step 6: Final answer
   x = 1,113.00