Finding the Fourth Proportional to 2,179.86, 3,008.15 and 1,185.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,179.86 : 3,008.15 = 1,185.12 : x
2. Step 2: Convert to fraction form
   2,179.86/3,008.15 = 1,185.12/x
3. Step 3: Cross multiply
   2,179.86x = 3,008.15 × 1,185.12
4. Step 4: Simplify right side
   2,179.86x = 3,564,997.76
5. Step 5: Solve for x
   x = 3,564,997.76/2,179.86
6. Step 6: Final answer
   x = 1,635.43