Finding the Fourth Proportional to 1,316.58, 1,816.52 and 896.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,316.58 : 1,816.52 = 896.18 : x
2. Step 2: Convert to fraction form
   1,316.58/1,816.52 = 896.18/x
3. Step 3: Cross multiply
   1,316.58x = 1,816.52 × 896.18
4. Step 4: Simplify right side
   1,316.58x = 1,627,928.89
5. Step 5: Solve for x
   x = 1,627,928.89/1,316.58
6. Step 6: Final answer
   x = 1,236.48