Finding the Fourth Proportional to 2,335.76, 3,223.34 and 1,287.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,335.76 : 3,223.34 = 1,287.88 : x
2. Step 2: Convert to fraction form
   2,335.76/3,223.34 = 1,287.88/x
3. Step 3: Cross multiply
   2,335.76x = 3,223.34 × 1,287.88
4. Step 4: Simplify right side
   2,335.76x = 4,151,275.12
5. Step 5: Solve for x
   x = 4,151,275.12/2,335.76
6. Step 6: Final answer
   x = 1,777.27