Finding the Fourth Proportional to 2,104.09, 3,152.65 and 1,279.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,104.09 : 3,152.65 = 1,279.87 : x
2. Step 2: Convert to fraction form
   2,104.09/3,152.65 = 1,279.87/x
3. Step 3: Cross multiply
   2,104.09x = 3,152.65 × 1,279.87
4. Step 4: Simplify right side
   2,104.09x = 4,034,982.16
5. Step 5: Solve for x
   x = 4,034,982.16/2,104.09
6. Step 6: Final answer
   x = 1,917.69