Finding the Fourth Proportional to 2,636.79, 3,638.79 and 1,458.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.79 : 3,638.79 = 1,458.06 : x
2. Step 2: Convert to fraction form
   2,636.79/3,638.79 = 1,458.06/x
3. Step 3: Cross multiply
   2,636.79x = 3,638.79 × 1,458.06
4. Step 4: Simplify right side
   2,636.79x = 5,305,574.15
5. Step 5: Solve for x
   x = 5,305,574.15/2,636.79
6. Step 6: Final answer
   x = 2,012.13