Finding the Fourth Proportional to 1,437.58, 1,983.82 and 808.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,437.58 : 1,983.82 = 808.11 : x
2. Step 2: Convert to fraction form
   1,437.58/1,983.82 = 808.11/x
3. Step 3: Cross multiply
   1,437.58x = 1,983.82 × 808.11
4. Step 4: Simplify right side
   1,437.58x = 1,603,144.78
5. Step 5: Solve for x
   x = 1,603,144.78/1,437.58
6. Step 6: Final answer
   x = 1,115.17