Finding the Fourth Proportional to 2,231.51, 3,077.91 and 1,485.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,231.51 : 3,077.91 = 1,485.23 : x
2. Step 2: Convert to fraction form
   2,231.51/3,077.91 = 1,485.23/x
3. Step 3: Cross multiply
   2,231.51x = 3,077.91 × 1,485.23
4. Step 4: Simplify right side
   2,231.51x = 4,571,388.88
5. Step 5: Solve for x
   x = 4,571,388.88/2,231.51
6. Step 6: Final answer
   x = 2,048.57