Finding the Fourth Proportional to 2,279.56, 3,145.56 and 1,335.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,279.56 : 3,145.56 = 1,335.31 : x
2. Step 2: Convert to fraction form
   2,279.56/3,145.56 = 1,335.31/x
3. Step 3: Cross multiply
   2,279.56x = 3,145.56 × 1,335.31
4. Step 4: Simplify right side
   2,279.56x = 4,200,297.72
5. Step 5: Solve for x
   x = 4,200,297.72/2,279.56
6. Step 6: Final answer
   x = 1,842.59