Finding the Fourth Proportional to 2,398.84, 3,308.20 and 1,513.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,398.84 : 3,308.20 = 1,513.10 : x
2. Step 2: Convert to fraction form
   2,398.84/3,308.20 = 1,513.10/x
3. Step 3: Cross multiply
   2,398.84x = 3,308.20 × 1,513.10
4. Step 4: Simplify right side
   2,398.84x = 5,005,641.91
5. Step 5: Solve for x
   x = 5,005,641.91/2,398.84
6. Step 6: Final answer
   x = 2,086.69