Finding the Fourth Proportional to 2,390.33, 3,296.88 and 1,395.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,390.33 : 3,296.88 = 1,395.55 : x
2. Step 2: Convert to fraction form
   2,390.33/3,296.88 = 1,395.55/x
3. Step 3: Cross multiply
   2,390.33x = 3,296.88 × 1,395.55
4. Step 4: Simplify right side
   2,390.33x = 4,600,944.40
5. Step 5: Solve for x
   x = 4,600,944.40/2,390.33
6. Step 6: Final answer
   x = 1,924.82