Finding the Fourth Proportional to 2,123.75, 2,930.69 and 1,179.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.75 : 2,930.69 = 1,179.59 : x
2. Step 2: Convert to fraction form
   2,123.75/2,930.69 = 1,179.59/x
3. Step 3: Cross multiply
   2,123.75x = 2,930.69 × 1,179.59
4. Step 4: Simplify right side
   2,123.75x = 3,456,992.07
5. Step 5: Solve for x
   x = 3,456,992.07/2,123.75
6. Step 6: Final answer
   x = 1,627.78