Finding the Fourth Proportional to 2,678.81, 3,696.77 and 1,499.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,678.81 : 3,696.77 = 1,499.90 : x
2. Step 2: Convert to fraction form
   2,678.81/3,696.77 = 1,499.90/x
3. Step 3: Cross multiply
   2,678.81x = 3,696.77 × 1,499.90
4. Step 4: Simplify right side
   2,678.81x = 5,544,759.34
5. Step 5: Solve for x
   x = 5,544,759.34/2,678.81
6. Step 6: Final answer
   x = 2,069.86