Finding the Fourth Proportional to 3,499.89, 5,246.79 and 1,308.65

Step by Step Solution

1. Step 1: Write the proportion equation
   3,499.89 : 5,246.79 = 1,308.65 : x
2. Step 2: Convert to fraction form
   3,499.89/5,246.79 = 1,308.65/x
3. Step 3: Cross multiply
   3,499.89x = 5,246.79 × 1,308.65
4. Step 4: Simplify right side
   3,499.89x = 6,866,185.50
5. Step 5: Solve for x
   x = 6,866,185.50/3,499.89
6. Step 6: Final answer
   x = 1,961.83