Finding the Fourth Proportional to 2,182.79, 3,011.25 and 1,298.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,182.79 : 3,011.25 = 1,298.09 : x
2. Step 2: Convert to fraction form
   2,182.79/3,011.25 = 1,298.09/x
3. Step 3: Cross multiply
   2,182.79x = 3,011.25 × 1,298.09
4. Step 4: Simplify right side
   2,182.79x = 3,908,873.51
5. Step 5: Solve for x
   x = 3,908,873.51/2,182.79
6. Step 6: Final answer
   x = 1,790.77