Finding the Fourth Proportional to 2,152.56, 3,230.16 and 854.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,152.56 : 3,230.16 = 854.13 : x
2. Step 2: Convert to fraction form
   2,152.56/3,230.16 = 854.13/x
3. Step 3: Cross multiply
   2,152.56x = 3,230.16 × 854.13
4. Step 4: Simplify right side
   2,152.56x = 2,758,976.56
5. Step 5: Solve for x
   x = 2,758,976.56/2,152.56
6. Step 6: Final answer
   x = 1,281.72