Finding the Fourth Proportional to 2,179.86, 3,007.53 and 1,248.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,179.86 : 3,007.53 = 1,248.18 : x
2. Step 2: Convert to fraction form
   2,179.86/3,007.53 = 1,248.18/x
3. Step 3: Cross multiply
   2,179.86x = 3,007.53 × 1,248.18
4. Step 4: Simplify right side
   2,179.86x = 3,753,938.80
5. Step 5: Solve for x
   x = 3,753,938.80/2,179.86
6. Step 6: Final answer
   x = 1,722.10