Finding the Fourth Proportional to 2,335.51, 3,222.75 and 1,287.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,335.51 : 3,222.75 = 1,287.37 : x
2. Step 2: Convert to fraction form
   2,335.51/3,222.75 = 1,287.37/x
3. Step 3: Cross multiply
   2,335.51x = 3,222.75 × 1,287.37
4. Step 4: Simplify right side
   2,335.51x = 4,148,871.67
5. Step 5: Solve for x
   x = 4,148,871.67/2,335.51
6. Step 6: Final answer
   x = 1,776.43