Finding the Fourth Proportional to 1,433.29, 1,978.11 and 874.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.29 : 1,978.11 = 874.09 : x
2. Step 2: Convert to fraction form
   1,433.29/1,978.11 = 874.09/x
3. Step 3: Cross multiply
   1,433.29x = 1,978.11 × 874.09
4. Step 4: Simplify right side
   1,433.29x = 1,729,046.17
5. Step 5: Solve for x
   x = 1,729,046.17/1,433.29
6. Step 6: Final answer
   x = 1,206.35