Finding the Fourth Proportional to 3,345.57, 5,018.54 and 1,395.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,345.57 : 5,018.54 = 1,395.81 : x
2. Step 2: Convert to fraction form
   3,345.57/5,018.54 = 1,395.81/x
3. Step 3: Cross multiply
   3,345.57x = 5,018.54 × 1,395.81
4. Step 4: Simplify right side
   3,345.57x = 7,004,928.32
5. Step 5: Solve for x
   x = 7,004,928.32/3,345.57
6. Step 6: Final answer
   x = 2,093.79