Finding the Fourth Proportional to 2,379.69, 3,283.59 and 1,331.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,379.69 : 3,283.59 = 1,331.55 : x
2. Step 2: Convert to fraction form
   2,379.69/3,283.59 = 1,331.55/x
3. Step 3: Cross multiply
   2,379.69x = 3,283.59 × 1,331.55
4. Step 4: Simplify right side
   2,379.69x = 4,372,264.26
5. Step 5: Solve for x
   x = 4,372,264.26/2,379.69
6. Step 6: Final answer
   x = 1,837.33