Finding the Fourth Proportional to 4,978.34, 6,870.06 and 2,740.31

Step by Step Solution

1. Step 1: Write the proportion equation
   4,978.34 : 6,870.06 = 2,740.31 : x
2. Step 2: Convert to fraction form
   4,978.34/6,870.06 = 2,740.31/x
3. Step 3: Cross multiply
   4,978.34x = 6,870.06 × 2,740.31
4. Step 4: Simplify right side
   4,978.34x = 18,826,094.12
5. Step 5: Solve for x
   x = 18,826,094.12/4,978.34
6. Step 6: Final answer
   x = 3,781.60