Finding the Fourth Proportional to 2,335.82, 3,223.26 and 1,287.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,335.82 : 3,223.26 = 1,287.86 : x
2. Step 2: Convert to fraction form
   2,335.82/3,223.26 = 1,287.86/x
3. Step 3: Cross multiply
   2,335.82x = 3,223.26 × 1,287.86
4. Step 4: Simplify right side
   2,335.82x = 4,151,091.51
5. Step 5: Solve for x
   x = 4,151,091.51/2,335.82
6. Step 6: Final answer
   x = 1,777.15