Finding the Fourth Proportional to 2,978.47, 4,469.76 and 1,336.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.47 : 4,469.76 = 1,336.86 : x
2. Step 2: Convert to fraction form
   2,978.47/4,469.76 = 1,336.86/x
3. Step 3: Cross multiply
   2,978.47x = 4,469.76 × 1,336.86
4. Step 4: Simplify right side
   2,978.47x = 5,975,414.32
5. Step 5: Solve for x
   x = 5,975,414.32/2,978.47
6. Step 6: Final answer
   x = 2,006.20