Finding the Fourth Proportional to 4,900.46, 7,350.64 and 1,978.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,900.46 : 7,350.64 = 1,978.72 : x
2. Step 2: Convert to fraction form
   4,900.46/7,350.64 = 1,978.72/x
3. Step 3: Cross multiply
   4,900.46x = 7,350.64 × 1,978.72
4. Step 4: Simplify right side
   4,900.46x = 14,544,835.06
5. Step 5: Solve for x
   x = 14,544,835.06/4,900.46
6. Step 6: Final answer
   x = 2,968.06