Finding the Fourth Proportional to 2,572.18, 3,551.13 and 1,689.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,572.18 : 3,551.13 = 1,689.52 : x
2. Step 2: Convert to fraction form
   2,572.18/3,551.13 = 1,689.52/x
3. Step 3: Cross multiply
   2,572.18x = 3,551.13 × 1,689.52
4. Step 4: Simplify right side
   2,572.18x = 5,999,705.16
5. Step 5: Solve for x
   x = 5,999,705.16/2,572.18
6. Step 6: Final answer
   x = 2,332.54