Finding the Fourth Proportional to 1,437.69, 1,984.10 and 808.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,437.69 : 1,984.10 = 808.19 : x
2. Step 2: Convert to fraction form
   1,437.69/1,984.10 = 808.19/x
3. Step 3: Cross multiply
   1,437.69x = 1,984.10 × 808.19
4. Step 4: Simplify right side
   1,437.69x = 1,603,529.78
5. Step 5: Solve for x
   x = 1,603,529.78/1,437.69
6. Step 6: Final answer
   x = 1,115.35