Finding the Fourth Proportional to 2,154.13, 3,225.71 and 1,720.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,154.13 : 3,225.71 = 1,720.37 : x
2. Step 2: Convert to fraction form
   2,154.13/3,225.71 = 1,720.37/x
3. Step 3: Cross multiply
   2,154.13x = 3,225.71 × 1,720.37
4. Step 4: Simplify right side
   2,154.13x = 5,549,417.40
5. Step 5: Solve for x
   x = 5,549,417.40/2,154.13
6. Step 6: Final answer
   x = 2,576.18