Finding the Fourth Proportional to 1,433.47, 1,978.54 and 874.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.47 : 1,978.54 = 874.25 : x
2. Step 2: Convert to fraction form
   1,433.47/1,978.54 = 874.25/x
3. Step 3: Cross multiply
   1,433.47x = 1,978.54 × 874.25
4. Step 4: Simplify right side
   1,433.47x = 1,729,738.60
5. Step 5: Solve for x
   x = 1,729,738.60/1,433.47
6. Step 6: Final answer
   x = 1,206.68