Finding the Fourth Proportional to 1,435.73, 1,981.40 and 806.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.73 : 1,981.40 = 806.30 : x
2. Step 2: Convert to fraction form
   1,435.73/1,981.40 = 806.30/x
3. Step 3: Cross multiply
   1,435.73x = 1,981.40 × 806.30
4. Step 4: Simplify right side
   1,435.73x = 1,597,596.31
5. Step 5: Solve for x
   x = 1,597,596.31/1,435.73
6. Step 6: Final answer
   x = 1,112.75