Finding the Fourth Proportional to 1,722.81, 2,572.55 and 1,353.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,722.81 : 2,572.55 = 1,353.45 : x
2. Step 2: Convert to fraction form
   1,722.81/2,572.55 = 1,353.45/x
3. Step 3: Cross multiply
   1,722.81x = 2,572.55 × 1,353.45
4. Step 4: Simplify right side
   1,722.81x = 3,481,811.03
5. Step 5: Solve for x
   x = 3,481,811.03/1,722.81
6. Step 6: Final answer
   x = 2,021.01