Finding the Fourth Proportional to 2,300.20, 3,447.60 and 1,722.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.20 : 3,447.60 = 1,722.40 : x
2. Step 2: Convert to fraction form
   2,300.20/3,447.60 = 1,722.40/x
3. Step 3: Cross multiply
   2,300.20x = 3,447.60 × 1,722.40
4. Step 4: Simplify right side
   2,300.20x = 5,938,146.24
5. Step 5: Solve for x
   x = 5,938,146.24/2,300.20
6. Step 6: Final answer
   x = 2,581.58