Finding the Fourth Proportional to 2,572.22, 3,548.76 and 1,688.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,572.22 : 3,548.76 = 1,688.51 : x
2. Step 2: Convert to fraction form
   2,572.22/3,548.76 = 1,688.51/x
3. Step 3: Cross multiply
   2,572.22x = 3,548.76 × 1,688.51
4. Step 4: Simplify right side
   2,572.22x = 5,992,116.75
5. Step 5: Solve for x
   x = 5,992,116.75/2,572.22
6. Step 6: Final answer
   x = 2,329.55