Finding the Fourth Proportional to 2,335.93, 3,223.61 and 1,288.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,335.93 : 3,223.61 = 1,288.03 : x
2. Step 2: Convert to fraction form
   2,335.93/3,223.61 = 1,288.03/x
3. Step 3: Cross multiply
   2,335.93x = 3,223.61 × 1,288.03
4. Step 4: Simplify right side
   2,335.93x = 4,152,106.39
5. Step 5: Solve for x
   x = 4,152,106.39/2,335.93
6. Step 6: Final answer
   x = 1,777.50