Finding the Fourth Proportional to 4,978.55, 6,870.33 and 2,740.52

Step by Step Solution

1. Step 1: Write the proportion equation
   4,978.55 : 6,870.33 = 2,740.52 : x
2. Step 2: Convert to fraction form
   4,978.55/6,870.33 = 2,740.52/x
3. Step 3: Cross multiply
   4,978.55x = 6,870.33 × 2,740.52
4. Step 4: Simplify right side
   4,978.55x = 18,828,242.42
5. Step 5: Solve for x
   x = 18,828,242.42/4,978.55
6. Step 6: Final answer
   x = 3,781.88