Finding the Fourth Proportional to 2,818.42, 4,225.62 and 869.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,818.42 : 4,225.62 = 869.54 : x
2. Step 2: Convert to fraction form
   2,818.42/4,225.62 = 869.54/x
3. Step 3: Cross multiply
   2,818.42x = 4,225.62 × 869.54
4. Step 4: Simplify right side
   2,818.42x = 3,674,345.61
5. Step 5: Solve for x
   x = 3,674,345.61/2,818.42
6. Step 6: Final answer
   x = 1,303.69