Finding the Fourth Proportional to 2,123.84, 2,930.85 and 1,179.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.84 : 2,930.85 = 1,179.69 : x
2. Step 2: Convert to fraction form
   2,123.84/2,930.85 = 1,179.69/x
3. Step 3: Cross multiply
   2,123.84x = 2,930.85 × 1,179.69
4. Step 4: Simplify right side
   2,123.84x = 3,457,494.44
5. Step 5: Solve for x
   x = 3,457,494.44/2,123.84
6. Step 6: Final answer
   x = 1,627.95