Finding the Fourth Proportional to 2,319.69, 3,479.38 and 1,087.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,319.69 : 3,479.38 = 1,087.37 : x
2. Step 2: Convert to fraction form
   2,319.69/3,479.38 = 1,087.37/x
3. Step 3: Cross multiply
   2,319.69x = 3,479.38 × 1,087.37
4. Step 4: Simplify right side
   2,319.69x = 3,783,379.41
5. Step 5: Solve for x
   x = 3,783,379.41/2,319.69
6. Step 6: Final answer
   x = 1,630.98