Finding the Fourth Proportional to 2,498.90, 3,446.99 and 1,615.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,498.90 : 3,446.99 = 1,615.20 : x
2. Step 2: Convert to fraction form
   2,498.90/3,446.99 = 1,615.20/x
3. Step 3: Cross multiply
   2,498.90x = 3,446.99 × 1,615.20
4. Step 4: Simplify right side
   2,498.90x = 5,567,570.17
5. Step 5: Solve for x
   x = 5,567,570.17/2,498.90
6. Step 6: Final answer
   x = 2,228.01