Finding the Fourth Proportional to 1,811.08, 2,715.69 and 885.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,811.08 : 2,715.69 = 885.25 : x
2. Step 2: Convert to fraction form
   1,811.08/2,715.69 = 885.25/x
3. Step 3: Cross multiply
   1,811.08x = 2,715.69 × 885.25
4. Step 4: Simplify right side
   1,811.08x = 2,404,064.57
5. Step 5: Solve for x
   x = 2,404,064.57/1,811.08
6. Step 6: Final answer
   x = 1,327.42