Finding the Fourth Proportional to 2,105.10, 2,904.97 and 1,319.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.10 : 2,904.97 = 1,319.58 : x
2. Step 2: Convert to fraction form
   2,105.10/2,904.97 = 1,319.58/x
3. Step 3: Cross multiply
   2,105.10x = 2,904.97 × 1,319.58
4. Step 4: Simplify right side
   2,105.10x = 3,833,340.31
5. Step 5: Solve for x
   x = 3,833,340.31/2,105.10
6. Step 6: Final answer
   x = 1,820.98