Finding the Fourth Proportional to 4,978.10, 7,467.96 and 1,691.48

Step by Step Solution

1. Step 1: Write the proportion equation
   4,978.10 : 7,467.96 = 1,691.48 : x
2. Step 2: Convert to fraction form
   4,978.10/7,467.96 = 1,691.48/x
3. Step 3: Cross multiply
   4,978.10x = 7,467.96 × 1,691.48
4. Step 4: Simplify right side
   4,978.10x = 12,631,904.98
5. Step 5: Solve for x
   x = 12,631,904.98/4,978.10
6. Step 6: Final answer
   x = 2,537.50