Finding the Fourth Proportional to 2,339.92, 3,228.72 and 1,395.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,339.92 : 3,228.72 = 1,395.67 : x
2. Step 2: Convert to fraction form
   2,339.92/3,228.72 = 1,395.67/x
3. Step 3: Cross multiply
   2,339.92x = 3,228.72 × 1,395.67
4. Step 4: Simplify right side
   2,339.92x = 4,506,227.64
5. Step 5: Solve for x
   x = 4,506,227.64/2,339.92
6. Step 6: Final answer
   x = 1,925.80