Finding the Fourth Proportional to 2,111.16, 2,913.38 and 1,179.66

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.16 : 2,913.38 = 1,179.66 : x
2. Step 2: Convert to fraction form
   2,111.16/2,913.38 = 1,179.66/x
3. Step 3: Cross multiply
   2,111.16x = 2,913.38 × 1,179.66
4. Step 4: Simplify right side
   2,111.16x = 3,436,797.85
5. Step 5: Solve for x
   x = 3,436,797.85/2,111.16
6. Step 6: Final answer
   x = 1,627.92