Finding the Fourth Proportional to 2,123.11, 2,929.68 and 1,178.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.11 : 2,929.68 = 1,178.83 : x
2. Step 2: Convert to fraction form
   2,123.11/2,929.68 = 1,178.83/x
3. Step 3: Cross multiply
   2,123.11x = 2,929.68 × 1,178.83
4. Step 4: Simplify right side
   2,123.11x = 3,453,594.67
5. Step 5: Solve for x
   x = 3,453,594.67/2,123.11
6. Step 6: Final answer
   x = 1,626.67