Finding the Fourth Proportional to 2,363.88, 3,547.68 and 1,638.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,363.88 : 3,547.68 = 1,638.56 : x
2. Step 2: Convert to fraction form
   2,363.88/3,547.68 = 1,638.56/x
3. Step 3: Cross multiply
   2,363.88x = 3,547.68 × 1,638.56
4. Step 4: Simplify right side
   2,363.88x = 5,813,086.54
5. Step 5: Solve for x
   x = 5,813,086.54/2,363.88
6. Step 6: Final answer
   x = 2,459.13