Finding the Fourth Proportional to 2,613.96, 3,921.84 and 1,316.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.96 : 3,921.84 = 1,316.34 : x
2. Step 2: Convert to fraction form
   2,613.96/3,921.84 = 1,316.34/x
3. Step 3: Cross multiply
   2,613.96x = 3,921.84 × 1,316.34
4. Step 4: Simplify right side
   2,613.96x = 5,162,474.87
5. Step 5: Solve for x
   x = 5,162,474.87/2,613.96
6. Step 6: Final answer
   x = 1,974.96