Finding the Fourth Proportional to 1,826.72, 2,722.76 and 1,720.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,826.72 : 2,722.76 = 1,720.22 : x
2. Step 2: Convert to fraction form
   1,826.72/2,722.76 = 1,720.22/x
3. Step 3: Cross multiply
   1,826.72x = 2,722.76 × 1,720.22
4. Step 4: Simplify right side
   1,826.72x = 4,683,746.21
5. Step 5: Solve for x
   x = 4,683,746.21/1,826.72
6. Step 6: Final answer
   x = 2,564.02