Finding the Fourth Proportional to 2,339.60, 3,228.86 and 1,345.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,339.60 : 3,228.86 = 1,345.46 : x
2. Step 2: Convert to fraction form
   2,339.60/3,228.86 = 1,345.46/x
3. Step 3: Cross multiply
   2,339.60x = 3,228.86 × 1,345.46
4. Step 4: Simplify right side
   2,339.60x = 4,344,289.19
5. Step 5: Solve for x
   x = 4,344,289.19/2,339.60
6. Step 6: Final answer
   x = 1,856.86