Finding the Fourth Proportional to 2,378.15, 3,568.13 and 1,079.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,378.15 : 3,568.13 = 1,079.31 : x
2. Step 2: Convert to fraction form
   2,378.15/3,568.13 = 1,079.31/x
3. Step 3: Cross multiply
   2,378.15x = 3,568.13 × 1,079.31
4. Step 4: Simplify right side
   2,378.15x = 3,851,118.39
5. Step 5: Solve for x
   x = 3,851,118.39/2,378.15
6. Step 6: Final answer
   x = 1,619.38