Finding the Fourth Proportional to 1,806.39, 2,709.89 and 881.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,806.39 : 2,709.89 = 881.37 : x
2. Step 2: Convert to fraction form
   1,806.39/2,709.89 = 881.37/x
3. Step 3: Cross multiply
   1,806.39x = 2,709.89 × 881.37
4. Step 4: Simplify right side
   1,806.39x = 2,388,411.34
5. Step 5: Solve for x
   x = 2,388,411.34/1,806.39
6. Step 6: Final answer
   x = 1,322.20