Finding the Fourth Proportional to 3,978.47, 5,966.17 and 1,345.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.47 : 5,966.17 = 1,345.27 : x
2. Step 2: Convert to fraction form
   3,978.47/5,966.17 = 1,345.27/x
3. Step 3: Cross multiply
   3,978.47x = 5,966.17 × 1,345.27
4. Step 4: Simplify right side
   3,978.47x = 8,026,102.79
5. Step 5: Solve for x
   x = 8,026,102.79/3,978.47
6. Step 6: Final answer
   x = 2,017.38