Finding the Fourth Proportional to 2,192.78, 3,025.50 and 1,248.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,192.78 : 3,025.50 = 1,248.41 : x
2. Step 2: Convert to fraction form
   2,192.78/3,025.50 = 1,248.41/x
3. Step 3: Cross multiply
   2,192.78x = 3,025.50 × 1,248.41
4. Step 4: Simplify right side
   2,192.78x = 3,777,064.46
5. Step 5: Solve for x
   x = 3,777,064.46/2,192.78
6. Step 6: Final answer
   x = 1,722.50