Finding the Fourth Proportional to 1,131.60, 1,561.20 and 895.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.60 : 1,561.20 = 895.62 : x
2. Step 2: Convert to fraction form
   1,131.60/1,561.20 = 895.62/x
3. Step 3: Cross multiply
   1,131.60x = 1,561.20 × 895.62
4. Step 4: Simplify right side
   1,131.60x = 1,398,241.94
5. Step 5: Solve for x
   x = 1,398,241.94/1,131.60
6. Step 6: Final answer
   x = 1,235.63