Finding the Fourth Proportional to 2,002.40, 2,998.53 and 1,817.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,002.40 : 2,998.53 = 1,817.72 : x
2. Step 2: Convert to fraction form
   2,002.40/2,998.53 = 1,817.72/x
3. Step 3: Cross multiply
   2,002.40x = 2,998.53 × 1,817.72
4. Step 4: Simplify right side
   2,002.40x = 5,450,487.95
5. Step 5: Solve for x
   x = 5,450,487.95/2,002.40
6. Step 6: Final answer
   x = 2,721.98