Finding the Fourth Proportional to 2,612.52, 3,919.23 and 1,380.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.52 : 3,919.23 = 1,380.96 : x
2. Step 2: Convert to fraction form
   2,612.52/3,919.23 = 1,380.96/x
3. Step 3: Cross multiply
   2,612.52x = 3,919.23 × 1,380.96
4. Step 4: Simplify right side
   2,612.52x = 5,412,299.86
5. Step 5: Solve for x
   x = 5,412,299.86/2,612.52
6. Step 6: Final answer
   x = 2,071.68