Finding the Fourth Proportional to 2,085.93, 2,873.97 and 1,386.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.93 : 2,873.97 = 1,386.09 : x
2. Step 2: Convert to fraction form
   2,085.93/2,873.97 = 1,386.09/x
3. Step 3: Cross multiply
   2,085.93x = 2,873.97 × 1,386.09
4. Step 4: Simplify right side
   2,085.93x = 3,983,581.08
5. Step 5: Solve for x
   x = 3,983,581.08/2,085.93
6. Step 6: Final answer
   x = 1,909.74