Finding the Fourth Proportional to 3,870.65, 5,341.61 and 2,379.44

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.65 : 5,341.61 = 2,379.44 : x
2. Step 2: Convert to fraction form
   3,870.65/5,341.61 = 2,379.44/x
3. Step 3: Cross multiply
   3,870.65x = 5,341.61 × 2,379.44
4. Step 4: Simplify right side
   3,870.65x = 12,710,059.80
5. Step 5: Solve for x
   x = 12,710,059.80/3,870.65
6. Step 6: Final answer
   x = 3,283.70