Finding the Fourth Proportional to 1,717.58, 2,577.89 and 885.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,717.58 : 2,577.89 = 885.22 : x
2. Step 2: Convert to fraction form
   1,717.58/2,577.89 = 885.22/x
3. Step 3: Cross multiply
   1,717.58x = 2,577.89 × 885.22
4. Step 4: Simplify right side
   1,717.58x = 2,281,995.55
5. Step 5: Solve for x
   x = 2,281,995.55/1,717.58
6. Step 6: Final answer
   x = 1,328.61