Finding the Fourth Proportional to 3,978.34, 5,967.53 and 1,345.87

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.34 : 5,967.53 = 1,345.87 : x
2. Step 2: Convert to fraction form
   3,978.34/5,967.53 = 1,345.87/x
3. Step 3: Cross multiply
   3,978.34x = 5,967.53 × 1,345.87
4. Step 4: Simplify right side
   3,978.34x = 8,031,503.00
5. Step 5: Solve for x
   x = 8,031,503.00/3,978.34
6. Step 6: Final answer
   x = 2,018.81