Finding the Fourth Proportional to 2,123.69, 2,930.69 and 1,179.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.69 : 2,930.69 = 1,179.45 : x
2. Step 2: Convert to fraction form
   2,123.69/2,930.69 = 1,179.45/x
3. Step 3: Cross multiply
   2,123.69x = 2,930.69 × 1,179.45
4. Step 4: Simplify right side
   2,123.69x = 3,456,602.32
5. Step 5: Solve for x
   x = 3,456,602.32/2,123.69
6. Step 6: Final answer
   x = 1,627.64