Finding the Fourth Proportional to 2,111.08, 2,913.28 and 1,179.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.08 : 2,913.28 = 1,179.58 : x
2. Step 2: Convert to fraction form
   2,111.08/2,913.28 = 1,179.58/x
3. Step 3: Cross multiply
   2,111.08x = 2,913.28 × 1,179.58
4. Step 4: Simplify right side
   2,111.08x = 3,436,441.01
5. Step 5: Solve for x
   x = 3,436,441.01/2,111.08
6. Step 6: Final answer
   x = 1,627.81