Finding the Fourth Proportional to 2,578.02, 3,558.56 and 1,583.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578.02 : 3,558.56 = 1,583.39 : x
2. Step 2: Convert to fraction form
   2,578.02/3,558.56 = 1,583.39/x
3. Step 3: Cross multiply
   2,578.02x = 3,558.56 × 1,583.39
4. Step 4: Simplify right side
   2,578.02x = 5,634,588.32
5. Step 5: Solve for x
   x = 5,634,588.32/2,578.02
6. Step 6: Final answer
   x = 2,185.63