Finding the Fourth Proportional to 2,558.54, 3,530.30 and 1,564.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,558.54 : 3,530.30 = 1,564.06 : x
2. Step 2: Convert to fraction form
   2,558.54/3,530.30 = 1,564.06/x
3. Step 3: Cross multiply
   2,558.54x = 3,530.30 × 1,564.06
4. Step 4: Simplify right side
   2,558.54x = 5,521,601.02
5. Step 5: Solve for x
   x = 5,521,601.02/2,558.54
6. Step 6: Final answer
   x = 2,158.11