Finding the Fourth Proportional to 2,124.05, 2,931.17 and 1,179.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,124.05 : 2,931.17 = 1,179.81 : x
2. Step 2: Convert to fraction form
   2,124.05/2,931.17 = 1,179.81/x
3. Step 3: Cross multiply
   2,124.05x = 2,931.17 × 1,179.81
4. Step 4: Simplify right side
   2,124.05x = 3,458,217.78
5. Step 5: Solve for x
   x = 3,458,217.78/2,124.05
6. Step 6: Final answer
   x = 1,628.13