Finding the Fourth Proportional to 3,870.74, 5,338.89 and 2,379.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.74 : 5,338.89 = 2,379.48 : x
2. Step 2: Convert to fraction form
   3,870.74/5,338.89 = 2,379.48/x
3. Step 3: Cross multiply
   3,870.74x = 5,338.89 × 2,379.48
4. Step 4: Simplify right side
   3,870.74x = 12,703,761.23
5. Step 5: Solve for x
   x = 12,703,761.23/3,870.74
6. Step 6: Final answer
   x = 3,282.00