Finding the Fourth Proportional to 4,978.48, 7,467.64 and 1,691.52

Step by Step Solution

1. Step 1: Write the proportion equation
   4,978.48 : 7,467.64 = 1,691.52 : x
2. Step 2: Convert to fraction form
   4,978.48/7,467.64 = 1,691.52/x
3. Step 3: Cross multiply
   4,978.48x = 7,467.64 × 1,691.52
4. Step 4: Simplify right side
   4,978.48x = 12,631,662.41
5. Step 5: Solve for x
   x = 12,631,662.41/4,978.48
6. Step 6: Final answer
   x = 2,537.25