Finding the Fourth Proportional to 4,978.39, 6,870.03 and 2,740.26

Step by Step Solution

1. Step 1: Write the proportion equation
   4,978.39 : 6,870.03 = 2,740.26 : x
2. Step 2: Convert to fraction form
   4,978.39/6,870.03 = 2,740.26/x
3. Step 3: Cross multiply
   4,978.39x = 6,870.03 × 2,740.26
4. Step 4: Simplify right side
   4,978.39x = 18,825,699.31
5. Step 5: Solve for x
   x = 18,825,699.31/4,978.39
6. Step 6: Final answer
   x = 3,781.48