Finding the Fourth Proportional to 2,978.31, 4,110.69 and 2,480.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.31 : 4,110.69 = 2,480.46 : x
2. Step 2: Convert to fraction form
   2,978.31/4,110.69 = 2,480.46/x
3. Step 3: Cross multiply
   2,978.31x = 4,110.69 × 2,480.46
4. Step 4: Simplify right side
   2,978.31x = 10,196,402.12
5. Step 5: Solve for x
   x = 10,196,402.12/2,978.31
6. Step 6: Final answer
   x = 3,423.55