Finding the Fourth Proportional to 5,414.90, 8,123.72 and 1,519.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,414.90 : 8,123.72 = 1,519.31 : x
2. Step 2: Convert to fraction form
   5,414.90/8,123.72 = 1,519.31/x
3. Step 3: Cross multiply
   5,414.90x = 8,123.72 × 1,519.31
4. Step 4: Simplify right side
   5,414.90x = 12,342,400.82
5. Step 5: Solve for x
   x = 12,342,400.82/5,414.90
6. Step 6: Final answer
   x = 2,279.34