Finding the Fourth Proportional to 2,123.76, 2,930.68 and 1,179.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.76 : 2,930.68 = 1,179.54 : x
2. Step 2: Convert to fraction form
   2,123.76/2,930.68 = 1,179.54/x
3. Step 3: Cross multiply
   2,123.76x = 2,930.68 × 1,179.54
4. Step 4: Simplify right side
   2,123.76x = 3,456,854.29
5. Step 5: Solve for x
   x = 3,456,854.29/2,123.76
6. Step 6: Final answer
   x = 1,627.70