Finding the Fourth Proportional to 2,978.35, 4,469.95 and 1,248.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.35 : 4,469.95 = 1,248.19 : x
2. Step 2: Convert to fraction form
   2,978.35/4,469.95 = 1,248.19/x
3. Step 3: Cross multiply
   2,978.35x = 4,469.95 × 1,248.19
4. Step 4: Simplify right side
   2,978.35x = 5,579,346.89
5. Step 5: Solve for x
   x = 5,579,346.89/2,978.35
6. Step 6: Final answer
   x = 1,873.30