Finding the Fourth Proportional to 3,870.90, 5,335.98 and 2,377.65

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.90 : 5,335.98 = 2,377.65 : x
2. Step 2: Convert to fraction form
   3,870.90/5,335.98 = 2,377.65/x
3. Step 3: Cross multiply
   3,870.90x = 5,335.98 × 2,377.65
4. Step 4: Simplify right side
   3,870.90x = 12,687,092.85
5. Step 5: Solve for x
   x = 12,687,092.85/3,870.90
6. Step 6: Final answer
   x = 3,277.56