Finding the Fourth Proportional to 3,744.89, 5,617.84 and 1,279.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,744.89 : 5,617.84 = 1,279.05 : x
2. Step 2: Convert to fraction form
   3,744.89/5,617.84 = 1,279.05/x
3. Step 3: Cross multiply
   3,744.89x = 5,617.84 × 1,279.05
4. Step 4: Simplify right side
   3,744.89x = 7,185,498.25
5. Step 5: Solve for x
   x = 7,185,498.25/3,744.89
6. Step 6: Final answer
   x = 1,918.75