Finding the Fourth Proportional to 2,353.78, 3,528.54 and 1,119.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,353.78 : 3,528.54 = 1,119.94 : x
2. Step 2: Convert to fraction form
   2,353.78/3,528.54 = 1,119.94/x
3. Step 3: Cross multiply
   2,353.78x = 3,528.54 × 1,119.94
4. Step 4: Simplify right side
   2,353.78x = 3,951,753.09
5. Step 5: Solve for x
   x = 3,951,753.09/2,353.78
6. Step 6: Final answer
   x = 1,678.90