Finding the Fourth Proportional to 3,978.07, 5,966.88 and 1,204.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.07 : 5,966.88 = 1,204.72 : x
2. Step 2: Convert to fraction form
   3,978.07/5,966.88 = 1,204.72/x
3. Step 3: Cross multiply
   3,978.07x = 5,966.88 × 1,204.72
4. Step 4: Simplify right side
   3,978.07x = 7,188,419.67
5. Step 5: Solve for x
   x = 7,188,419.67/3,978.07
6. Step 6: Final answer
   x = 1,807.01