Finding the Fourth Proportional to 2,679, 3,696.72 and 1,499.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,679 : 3,696.72 = 1,499.90 : x
2. Step 2: Convert to fraction form
   2,679/3,696.72 = 1,499.90/x
3. Step 3: Cross multiply
   2,679x = 3,696.72 × 1,499.90
4. Step 4: Simplify right side
   2,679x = 5,544,710.33
5. Step 5: Solve for x
   x = 5,544,710.33/2,679
6. Step 6: Final answer
   x = 2,069.69