Finding the Fourth Proportional to 2,279.22, 3,145.55 and 1,335.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,279.22 : 3,145.55 = 1,335.51 : x
2. Step 2: Convert to fraction form
   2,279.22/3,145.55 = 1,335.51/x
3. Step 3: Cross multiply
   2,279.22x = 3,145.55 × 1,335.51
4. Step 4: Simplify right side
   2,279.22x = 4,200,906.80
5. Step 5: Solve for x
   x = 4,200,906.80/2,279.22
6. Step 6: Final answer
   x = 1,843.13