Finding the Fourth Proportional to 2,585.79, 3,570.39 and 1,591.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,585.79 : 3,570.39 = 1,591.47 : x
2. Step 2: Convert to fraction form
   2,585.79/3,570.39 = 1,591.47/x
3. Step 3: Cross multiply
   2,585.79x = 3,570.39 × 1,591.47
4. Step 4: Simplify right side
   2,585.79x = 5,682,168.57
5. Step 5: Solve for x
   x = 5,682,168.57/2,585.79
6. Step 6: Final answer
   x = 2,197.46