Finding the Fourth Proportional to 2,335.93, 3,223.58 and 1,288.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,335.93 : 3,223.58 = 1,288.00 : x
2. Step 2: Convert to fraction form
   2,335.93/3,223.58 = 1,288.00/x
3. Step 3: Cross multiply
   2,335.93x = 3,223.58 × 1,288.00
4. Step 4: Simplify right side
   2,335.93x = 4,151,954.92
5. Step 5: Solve for x
   x = 4,151,954.92/2,335.93
6. Step 6: Final answer
   x = 1,777.43