Finding the Fourth Proportional to 3,978.72, 5,972.27 and 1,900.46

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.72 : 5,972.27 = 1,900.46 : x
2. Step 2: Convert to fraction form
   3,978.72/5,972.27 = 1,900.46/x
3. Step 3: Cross multiply
   3,978.72x = 5,972.27 × 1,900.46
4. Step 4: Simplify right side
   3,978.72x = 11,350,065.67
5. Step 5: Solve for x
   x = 11,350,065.67/3,978.72
6. Step 6: Final answer
   x = 2,852.69