Finding the Fourth Proportional to 1,810.76, 2,716.61 and 885.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,810.76 : 2,716.61 = 885.06 : x
2. Step 2: Convert to fraction form
   1,810.76/2,716.61 = 885.06/x
3. Step 3: Cross multiply
   1,810.76x = 2,716.61 × 885.06
4. Step 4: Simplify right side
   1,810.76x = 2,404,358.42
5. Step 5: Solve for x
   x = 2,404,358.42/1,810.76
6. Step 6: Final answer
   x = 1,327.82