Finding the Fourth Proportional to 1,437.89, 1,983.81 and 808.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,437.89 : 1,983.81 = 808.34 : x
2. Step 2: Convert to fraction form
   1,437.89/1,983.81 = 808.34/x
3. Step 3: Cross multiply
   1,437.89x = 1,983.81 × 808.34
4. Step 4: Simplify right side
   1,437.89x = 1,603,583.06
5. Step 5: Solve for x
   x = 1,603,583.06/1,437.89
6. Step 6: Final answer
   x = 1,115.24