Finding the Fourth Proportional to 2,659.01, 3,987.71 and 1,271.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,659.01 : 3,987.71 = 1,271.62 : x
2. Step 2: Convert to fraction form
   2,659.01/3,987.71 = 1,271.62/x
3. Step 3: Cross multiply
   2,659.01x = 3,987.71 × 1,271.62
4. Step 4: Simplify right side
   2,659.01x = 5,070,825.49
5. Step 5: Solve for x
   x = 5,070,825.49/2,659.01
6. Step 6: Final answer
   x = 1,907.04