Finding the Fourth Proportional to 2,572.72, 3,549.72 and 1,642.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,572.72 : 3,549.72 = 1,642.48 : x
2. Step 2: Convert to fraction form
   2,572.72/3,549.72 = 1,642.48/x
3. Step 3: Cross multiply
   2,572.72x = 3,549.72 × 1,642.48
4. Step 4: Simplify right side
   2,572.72x = 5,830,344.11
5. Step 5: Solve for x
   x = 5,830,344.11/2,572.72
6. Step 6: Final answer
   x = 2,266.22