Finding the Fourth Proportional to 2,816.94, 4,225.89 and 869.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,816.94 : 4,225.89 = 869.10 : x
2. Step 2: Convert to fraction form
   2,816.94/4,225.89 = 869.10/x
3. Step 3: Cross multiply
   2,816.94x = 4,225.89 × 869.10
4. Step 4: Simplify right side
   2,816.94x = 3,672,721.00
5. Step 5: Solve for x
   x = 3,672,721.00/2,816.94
6. Step 6: Final answer
   x = 1,303.80