Finding the Fourth Proportional to 1,722.11, 2,568.82 and 1,556.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,722.11 : 2,568.82 = 1,556.01 : x
2. Step 2: Convert to fraction form
   1,722.11/2,568.82 = 1,556.01/x
3. Step 3: Cross multiply
   1,722.11x = 2,568.82 × 1,556.01
4. Step 4: Simplify right side
   1,722.11x = 3,997,109.61
5. Step 5: Solve for x
   x = 3,997,109.61/1,722.11
6. Step 6: Final answer
   x = 2,321.05