Finding the Fourth Proportional to 3,980.53, 5,492.88 and 2,488.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,980.53 : 5,492.88 = 2,488.38 : x
2. Step 2: Convert to fraction form
   3,980.53/5,492.88 = 2,488.38/x
3. Step 3: Cross multiply
   3,980.53x = 5,492.88 × 2,488.38
4. Step 4: Simplify right side
   3,980.53x = 13,668,372.73
5. Step 5: Solve for x
   x = 13,668,372.73/3,980.53
6. Step 6: Final answer
   x = 3,433.81