Finding the Fourth Proportional to 3,783.58, 5,673.54 and 1,318.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,783.58 : 5,673.54 = 1,318.34 : x
2. Step 2: Convert to fraction form
   3,783.58/5,673.54 = 1,318.34/x
3. Step 3: Cross multiply
   3,783.58x = 5,673.54 × 1,318.34
4. Step 4: Simplify right side
   3,783.58x = 7,479,654.72
5. Step 5: Solve for x
   x = 7,479,654.72/3,783.58
6. Step 6: Final answer
   x = 1,976.87