Finding the Fourth Proportional to 6,910.32, 10,362.43 and 1,978.84

Step by Step Solution

1. Step 1: Write the proportion equation
   6,910.32 : 10,362.43 = 1,978.84 : x
2. Step 2: Convert to fraction form
   6,910.32/10,362.43 = 1,978.84/x
3. Step 3: Cross multiply
   6,910.32x = 10,362.43 × 1,978.84
4. Step 4: Simplify right side
   6,910.32x = 20,505,590.98
5. Step 5: Solve for x
   x = 20,505,590.98/6,910.32
6. Step 6: Final answer
   x = 2,967.39