Finding the Fourth Proportional to 2,085.68, 2,891.40 and 1,974.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.68 : 2,891.40 = 1,974.71 : x
2. Step 2: Convert to fraction form
   2,085.68/2,891.40 = 1,974.71/x
3. Step 3: Cross multiply
   2,085.68x = 2,891.40 × 1,974.71
4. Step 4: Simplify right side
   2,085.68x = 5,709,662.04
5. Step 5: Solve for x
   x = 5,709,662.04/2,085.68
6. Step 6: Final answer
   x = 2,737.56