Finding the Fourth Proportional to 2,825.68, 3,900.72 and 1,818.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,825.68 : 3,900.72 = 1,818.84 : x
2. Step 2: Convert to fraction form
   2,825.68/3,900.72 = 1,818.84/x
3. Step 3: Cross multiply
   2,825.68x = 3,900.72 × 1,818.84
4. Step 4: Simplify right side
   2,825.68x = 7,094,785.56
5. Step 5: Solve for x
   x = 7,094,785.56/2,825.68
6. Step 6: Final answer
   x = 2,510.82