Finding the Fourth Proportional to 1,437.72, 1,984.05 and 808.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,437.72 : 1,984.05 = 808.23 : x
2. Step 2: Convert to fraction form
   1,437.72/1,984.05 = 808.23/x
3. Step 3: Cross multiply
   1,437.72x = 1,984.05 × 808.23
4. Step 4: Simplify right side
   1,437.72x = 1,603,568.73
5. Step 5: Solve for x
   x = 1,603,568.73/1,437.72
6. Step 6: Final answer
   x = 1,115.36