Finding the Fourth Proportional to 2,147.75, 3,218.74 and 914.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,147.75 : 3,218.74 = 914.83 : x
2. Step 2: Convert to fraction form
   2,147.75/3,218.74 = 914.83/x
3. Step 3: Cross multiply
   2,147.75x = 3,218.74 × 914.83
4. Step 4: Simplify right side
   2,147.75x = 2,944,589.58
5. Step 5: Solve for x
   x = 2,944,589.58/2,147.75
6. Step 6: Final answer
   x = 1,371.01