Finding the Fourth Proportional to 1,433.87, 1,978.11 and 874.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.87 : 1,978.11 = 874.25 : x
2. Step 2: Convert to fraction form
   1,433.87/1,978.11 = 874.25/x
3. Step 3: Cross multiply
   1,433.87x = 1,978.11 × 874.25
4. Step 4: Simplify right side
   1,433.87x = 1,729,352.78
5. Step 5: Solve for x
   x = 1,729,352.78/1,433.87
6. Step 6: Final answer
   x = 1,206.08