Finding the Fourth Proportional to 2,390.46, 3,583.52 and 851.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,390.46 : 3,583.52 = 851.10 : x
2. Step 2: Convert to fraction form
   2,390.46/3,583.52 = 851.10/x
3. Step 3: Cross multiply
   2,390.46x = 3,583.52 × 851.10
4. Step 4: Simplify right side
   2,390.46x = 3,049,933.87
5. Step 5: Solve for x
   x = 3,049,933.87/2,390.46
6. Step 6: Final answer
   x = 1,275.88