Finding the Fourth Proportional to 3,436.72, 4,742.04 and 2,020.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,436.72 : 4,742.04 = 2,020.88 : x
2. Step 2: Convert to fraction form
   3,436.72/4,742.04 = 2,020.88/x
3. Step 3: Cross multiply
   3,436.72x = 4,742.04 × 2,020.88
4. Step 4: Simplify right side
   3,436.72x = 9,583,093.80
5. Step 5: Solve for x
   x = 9,583,093.80/3,436.72
6. Step 6: Final answer
   x = 2,788.44