Finding the Fourth Proportional to 2,119.92, 3,179.06 and 1,298.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,119.92 : 3,179.06 = 1,298.56 : x
2. Step 2: Convert to fraction form
   2,119.92/3,179.06 = 1,298.56/x
3. Step 3: Cross multiply
   2,119.92x = 3,179.06 × 1,298.56
4. Step 4: Simplify right side
   2,119.92x = 4,128,200.15
5. Step 5: Solve for x
   x = 4,128,200.15/2,119.92
6. Step 6: Final answer
   x = 1,947.34