Finding the Fourth Proportional to 2,345.89, 3,511.82 and 1,418.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,345.89 : 3,511.82 = 1,418.64 : x
2. Step 2: Convert to fraction form
   2,345.89/3,511.82 = 1,418.64/x
3. Step 3: Cross multiply
   2,345.89x = 3,511.82 × 1,418.64
4. Step 4: Simplify right side
   2,345.89x = 4,982,022.42
5. Step 5: Solve for x
   x = 4,982,022.42/2,345.89
6. Step 6: Final answer
   x = 2,123.72