Finding the Fourth Proportional to 3,978.32, 5,967.01 and 1,056.85

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.32 : 5,967.01 = 1,056.85 : x
2. Step 2: Convert to fraction form
   3,978.32/5,967.01 = 1,056.85/x
3. Step 3: Cross multiply
   3,978.32x = 5,967.01 × 1,056.85
4. Step 4: Simplify right side
   3,978.32x = 6,306,234.52
5. Step 5: Solve for x
   x = 6,306,234.52/3,978.32
6. Step 6: Final answer
   x = 1,585.15