Finding the Fourth Proportional to 2,580.51, 3,561.87 and 1,585.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580.51 : 3,561.87 = 1,585.43 : x
2. Step 2: Convert to fraction form
   2,580.51/3,561.87 = 1,585.43/x
3. Step 3: Cross multiply
   2,580.51x = 3,561.87 × 1,585.43
4. Step 4: Simplify right side
   2,580.51x = 5,647,095.55
5. Step 5: Solve for x
   x = 5,647,095.55/2,580.51
6. Step 6: Final answer
   x = 2,188.36