Finding the Fourth Proportional to 2,659.85, 3,983.69 and 1,274.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,659.85 : 3,983.69 = 1,274.16 : x
2. Step 2: Convert to fraction form
   2,659.85/3,983.69 = 1,274.16/x
3. Step 3: Cross multiply
   2,659.85x = 3,983.69 × 1,274.16
4. Step 4: Simplify right side
   2,659.85x = 5,075,876.57
5. Step 5: Solve for x
   x = 5,075,876.57/2,659.85
6. Step 6: Final answer
   x = 1,908.33