Finding the Fourth Proportional to 1,436.69, 1,982.56 and 807.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.69 : 1,982.56 = 807.25 : x
2. Step 2: Convert to fraction form
   1,436.69/1,982.56 = 807.25/x
3. Step 3: Cross multiply
   1,436.69x = 1,982.56 × 807.25
4. Step 4: Simplify right side
   1,436.69x = 1,600,421.10
5. Step 5: Solve for x
   x = 1,600,421.10/1,436.69
6. Step 6: Final answer
   x = 1,113.96