Finding the Fourth Proportional to 3,978.23, 5,967.40 and 1,056.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.23 : 5,967.40 = 1,056.52 : x
2. Step 2: Convert to fraction form
   3,978.23/5,967.40 = 1,056.52/x
3. Step 3: Cross multiply
   3,978.23x = 5,967.40 × 1,056.52
4. Step 4: Simplify right side
   3,978.23x = 6,304,677.45
5. Step 5: Solve for x
   x = 6,304,677.45/3,978.23
6. Step 6: Final answer
   x = 1,584.79