Finding the Fourth Proportional to 2,179.83, 3,008.57 and 1,296.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,179.83 : 3,008.57 = 1,296.12 : x
2. Step 2: Convert to fraction form
   2,179.83/3,008.57 = 1,296.12/x
3. Step 3: Cross multiply
   2,179.83x = 3,008.57 × 1,296.12
4. Step 4: Simplify right side
   2,179.83x = 3,899,461.27
5. Step 5: Solve for x
   x = 3,899,461.27/2,179.83
6. Step 6: Final answer
   x = 1,788.88