Finding the Fourth Proportional to 5,123.27, 7,684.88 and 1,613.57

Step by Step Solution

1. Step 1: Write the proportion equation
   5,123.27 : 7,684.88 = 1,613.57 : x
2. Step 2: Convert to fraction form
   5,123.27/7,684.88 = 1,613.57/x
3. Step 3: Cross multiply
   5,123.27x = 7,684.88 × 1,613.57
4. Step 4: Simplify right side
   5,123.27x = 12,400,083.75
5. Step 5: Solve for x
   x = 12,400,083.75/5,123.27
6. Step 6: Final answer
   x = 2,420.35