Finding the Fourth Proportional to 3,680.76, 5,078.99 and 2,488.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,680.76 : 5,078.99 = 2,488.34 : x
2. Step 2: Convert to fraction form
   3,680.76/5,078.99 = 2,488.34/x
3. Step 3: Cross multiply
   3,680.76x = 5,078.99 × 2,488.34
4. Step 4: Simplify right side
   3,680.76x = 12,638,263.56
5. Step 5: Solve for x
   x = 12,638,263.56/3,680.76
6. Step 6: Final answer
   x = 3,433.60