Finding the Fourth Proportional to 1,433.52, 1,978.82 and 902.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.52 : 1,978.82 = 902.44 : x
2. Step 2: Convert to fraction form
   1,433.52/1,978.82 = 902.44/x
3. Step 3: Cross multiply
   1,433.52x = 1,978.82 × 902.44
4. Step 4: Simplify right side
   1,433.52x = 1,785,766.32
5. Step 5: Solve for x
   x = 1,785,766.32/1,433.52
6. Step 6: Final answer
   x = 1,245.72