Finding the Fourth Proportional to 2,562.72, 3,843.91 and 919.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,562.72 : 3,843.91 = 919.32 : x
2. Step 2: Convert to fraction form
   2,562.72/3,843.91 = 919.32/x
3. Step 3: Cross multiply
   2,562.72x = 3,843.91 × 919.32
4. Step 4: Simplify right side
   2,562.72x = 3,533,764.90
5. Step 5: Solve for x
   x = 3,533,764.90/2,562.72
6. Step 6: Final answer
   x = 1,378.91