Finding the Fourth Proportional to 2,335.87, 3,223.50 and 1,287.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,335.87 : 3,223.50 = 1,287.95 : x
2. Step 2: Convert to fraction form
   2,335.87/3,223.50 = 1,287.95/x
3. Step 3: Cross multiply
   2,335.87x = 3,223.50 × 1,287.95
4. Step 4: Simplify right side
   2,335.87x = 4,151,706.83
5. Step 5: Solve for x
   x = 4,151,706.83/2,335.87
6. Step 6: Final answer
   x = 1,777.37