Finding the Fourth Proportional to 2,152.52, 3,228.86 and 613.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,152.52 : 3,228.86 = 613.48 : x
2. Step 2: Convert to fraction form
   2,152.52/3,228.86 = 613.48/x
3. Step 3: Cross multiply
   2,152.52x = 3,228.86 × 613.48
4. Step 4: Simplify right side
   2,152.52x = 1,980,841.03
5. Step 5: Solve for x
   x = 1,980,841.03/2,152.52
6. Step 6: Final answer
   x = 920.24