Finding the Fourth Proportional to 2,623.48, 3,620.38 and 1,489.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,623.48 : 3,620.38 = 1,489.37 : x
2. Step 2: Convert to fraction form
   2,623.48/3,620.38 = 1,489.37/x
3. Step 3: Cross multiply
   2,623.48x = 3,620.38 × 1,489.37
4. Step 4: Simplify right side
   2,623.48x = 5,392,085.36
5. Step 5: Solve for x
   x = 5,392,085.36/2,623.48
6. Step 6: Final answer
   x = 2,055.32