Finding the Fourth Proportional to 3,642.24, 5,459.04 and 1,998.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,642.24 : 5,459.04 = 1,998.72 : x
2. Step 2: Convert to fraction form
   3,642.24/5,459.04 = 1,998.72/x
3. Step 3: Cross multiply
   3,642.24x = 5,459.04 × 1,998.72
4. Step 4: Simplify right side
   3,642.24x = 10,911,092.43
5. Step 5: Solve for x
   x = 10,911,092.43/3,642.24
6. Step 6: Final answer
   x = 2,995.71