Finding the Fourth Proportional to 4,978.82, 6,870.53 and 2,740.65

Step by Step Solution

1. Step 1: Write the proportion equation
   4,978.82 : 6,870.53 = 2,740.65 : x
2. Step 2: Convert to fraction form
   4,978.82/6,870.53 = 2,740.65/x
3. Step 3: Cross multiply
   4,978.82x = 6,870.53 × 2,740.65
4. Step 4: Simplify right side
   4,978.82x = 18,829,719.73
5. Step 5: Solve for x
   x = 18,829,719.73/4,978.82
6. Step 6: Final answer
   x = 3,781.96