Finding the Fourth Proportional to 2,380.69, 3,568.46 and 994.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,380.69 : 3,568.46 = 994.78 : x
2. Step 2: Convert to fraction form
   2,380.69/3,568.46 = 994.78/x
3. Step 3: Cross multiply
   2,380.69x = 3,568.46 × 994.78
4. Step 4: Simplify right side
   2,380.69x = 3,549,832.13
5. Step 5: Solve for x
   x = 3,549,832.13/2,380.69
6. Step 6: Final answer
   x = 1,491.09