Finding the Fourth Proportional to 3,783.08, 5,674.59 and 1,317.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,783.08 : 5,674.59 = 1,317.89 : x
2. Step 2: Convert to fraction form
   3,783.08/5,674.59 = 1,317.89/x
3. Step 3: Cross multiply
   3,783.08x = 5,674.59 × 1,317.89
4. Step 4: Simplify right side
   3,783.08x = 7,478,485.42
5. Step 5: Solve for x
   x = 7,478,485.42/3,783.08
6. Step 6: Final answer
   x = 1,976.82