Finding the Fourth Proportional to 4,978.52, 6,870.72 and 2,740.49

Step by Step Solution

1. Step 1: Write the proportion equation
   4,978.52 : 6,870.72 = 2,740.49 : x
2. Step 2: Convert to fraction form
   4,978.52/6,870.72 = 2,740.49/x
3. Step 3: Cross multiply
   4,978.52x = 6,870.72 × 2,740.49
4. Step 4: Simplify right side
   4,978.52x = 18,829,139.45
5. Step 5: Solve for x
   x = 18,829,139.45/4,978.52
6. Step 6: Final answer
   x = 3,782.08