Finding the Fourth Proportional to 1,433.96, 1,978.34 and 874.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.96 : 1,978.34 = 874.24 : x
2. Step 2: Convert to fraction form
   1,433.96/1,978.34 = 874.24/x
3. Step 3: Cross multiply
   1,433.96x = 1,978.34 × 874.24
4. Step 4: Simplify right side
   1,433.96x = 1,729,543.96
5. Step 5: Solve for x
   x = 1,729,543.96/1,433.96
6. Step 6: Final answer
   x = 1,206.13