Finding the Fourth Proportional to 4,978.91, 7,469.27 and 1,691.71

Step by Step Solution

1. Step 1: Write the proportion equation
   4,978.91 : 7,469.27 = 1,691.71 : x
2. Step 2: Convert to fraction form
   4,978.91/7,469.27 = 1,691.71/x
3. Step 3: Cross multiply
   4,978.91x = 7,469.27 × 1,691.71
4. Step 4: Simplify right side
   4,978.91x = 12,635,838.75
5. Step 5: Solve for x
   x = 12,635,838.75/4,978.91
6. Step 6: Final answer
   x = 2,537.87