Finding the Fourth Proportional to 2,345.83, 3,230.28 and 1,681.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,345.83 : 3,230.28 = 1,681.54 : x
2. Step 2: Convert to fraction form
   2,345.83/3,230.28 = 1,681.54/x
3. Step 3: Cross multiply
   2,345.83x = 3,230.28 × 1,681.54
4. Step 4: Simplify right side
   2,345.83x = 5,431,845.03
5. Step 5: Solve for x
   x = 5,431,845.03/2,345.83
6. Step 6: Final answer
   x = 2,315.53