Finding the Fourth Proportional to 2,155.14, 2,974.41 and 1,316.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155.14 : 2,974.41 = 1,316.33 : x
2. Step 2: Convert to fraction form
   2,155.14/2,974.41 = 1,316.33/x
3. Step 3: Cross multiply
   2,155.14x = 2,974.41 × 1,316.33
4. Step 4: Simplify right side
   2,155.14x = 3,915,290.24
5. Step 5: Solve for x
   x = 3,915,290.24/2,155.14
6. Step 6: Final answer
   x = 1,816.72