Finding the Fourth Proportional to 2,011.42, 3,015.10 and 1,319.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,011.42 : 3,015.10 = 1,319.48 : x
2. Step 2: Convert to fraction form
   2,011.42/3,015.10 = 1,319.48/x
3. Step 3: Cross multiply
   2,011.42x = 3,015.10 × 1,319.48
4. Step 4: Simplify right side
   2,011.42x = 3,978,364.15
5. Step 5: Solve for x
   x = 3,978,364.15/2,011.42
6. Step 6: Final answer
   x = 1,977.89