Finding the Fourth Proportional to 2,613.76, 3,924.12 and 1,518.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.76 : 3,924.12 = 1,518.91 : x
2. Step 2: Convert to fraction form
   2,613.76/3,924.12 = 1,518.91/x
3. Step 3: Cross multiply
   2,613.76x = 3,924.12 × 1,518.91
4. Step 4: Simplify right side
   2,613.76x = 5,960,377.51
5. Step 5: Solve for x
   x = 5,960,377.51/2,613.76
6. Step 6: Final answer
   x = 2,280.38