Finding the Fourth Proportional to 3,978.63, 5,967.12 and 1,512.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.63 : 5,967.12 = 1,512.59 : x
2. Step 2: Convert to fraction form
   3,978.63/5,967.12 = 1,512.59/x
3. Step 3: Cross multiply
   3,978.63x = 5,967.12 × 1,512.59
4. Step 4: Simplify right side
   3,978.63x = 9,025,776.21
5. Step 5: Solve for x
   x = 9,025,776.21/3,978.63
6. Step 6: Final answer
   x = 2,268.56