Finding the Fourth Proportional to 2,378.50, 3,568.37 and 1,392.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,378.50 : 3,568.37 = 1,392.15 : x
2. Step 2: Convert to fraction form
   2,378.50/3,568.37 = 1,392.15/x
3. Step 3: Cross multiply
   2,378.50x = 3,568.37 × 1,392.15
4. Step 4: Simplify right side
   2,378.50x = 4,967,712.72
5. Step 5: Solve for x
   x = 4,967,712.72/2,378.50
6. Step 6: Final answer
   x = 2,088.59