Finding the Fourth Proportional to 4,978.59, 6,870.41 and 2,740.43

Step by Step Solution

1. Step 1: Write the proportion equation
   4,978.59 : 6,870.41 = 2,740.43 : x
2. Step 2: Convert to fraction form
   4,978.59/6,870.41 = 2,740.43/x
3. Step 3: Cross multiply
   4,978.59x = 6,870.41 × 2,740.43
4. Step 4: Simplify right side
   4,978.59x = 18,827,829.62
5. Step 5: Solve for x
   x = 18,827,829.62/4,978.59
6. Step 6: Final answer
   x = 3,781.76