Finding the Fourth Proportional to 2,179.50, 3,007.74 and 1,248

Step by Step Solution

1. Step 1: Write the proportion equation
   2,179.50 : 3,007.74 = 1,248 : x
2. Step 2: Convert to fraction form
   2,179.50/3,007.74 = 1,248/x
3. Step 3: Cross multiply
   2,179.50x = 3,007.74 × 1,248
4. Step 4: Simplify right side
   2,179.50x = 3,753,659.52
5. Step 5: Solve for x
   x = 3,753,659.52/2,179.50
6. Step 6: Final answer
   x = 1,722.26