Finding the Fourth Proportional to 3,978.04, 5,484.62 and 2,485.41

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.04 : 5,484.62 = 2,485.41 : x
2. Step 2: Convert to fraction form
   3,978.04/5,484.62 = 2,485.41/x
3. Step 3: Cross multiply
   3,978.04x = 5,484.62 × 2,485.41
4. Step 4: Simplify right side
   3,978.04x = 13,631,533.96
5. Step 5: Solve for x
   x = 13,631,533.96/3,978.04
6. Step 6: Final answer
   x = 3,426.70