Finding the Fourth Proportional to 2,111.08, 2,913.54 and 1,179.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.08 : 2,913.54 = 1,179.40 : x
2. Step 2: Convert to fraction form
   2,111.08/2,913.54 = 1,179.40/x
3. Step 3: Cross multiply
   2,111.08x = 2,913.54 × 1,179.40
4. Step 4: Simplify right side
   2,111.08x = 3,436,229.08
5. Step 5: Solve for x
   x = 3,436,229.08/2,111.08
6. Step 6: Final answer
   x = 1,627.71