Finding the Fourth Proportional to 2,578.77, 3,558.74 and 1,583.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578.77 : 3,558.74 = 1,583.69 : x
2. Step 2: Convert to fraction form
   2,578.77/3,558.74 = 1,583.69/x
3. Step 3: Cross multiply
   2,578.77x = 3,558.74 × 1,583.69
4. Step 4: Simplify right side
   2,578.77x = 5,635,915.24
5. Step 5: Solve for x
   x = 5,635,915.24/2,578.77
6. Step 6: Final answer
   x = 2,185.51