Finding the Fourth Proportional to 2,019.53, 2,785.24 and 1,391.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.53 : 2,785.24 = 1,391.08 : x
2. Step 2: Convert to fraction form
   2,019.53/2,785.24 = 1,391.08/x
3. Step 3: Cross multiply
   2,019.53x = 2,785.24 × 1,391.08
4. Step 4: Simplify right side
   2,019.53x = 3,874,481.22
5. Step 5: Solve for x
   x = 3,874,481.22/2,019.53
6. Step 6: Final answer
   x = 1,918.50