Finding the Fourth Proportional to 3,131.32, 4,321.52 and 1,805.08

Step by Step Solution

1. Step 1: Write the proportion equation
   3,131.32 : 4,321.52 = 1,805.08 : x
2. Step 2: Convert to fraction form
   3,131.32/4,321.52 = 1,805.08/x
3. Step 3: Cross multiply
   3,131.32x = 4,321.52 × 1,805.08
4. Step 4: Simplify right side
   3,131.32x = 7,800,689.32
5. Step 5: Solve for x
   x = 7,800,689.32/3,131.32
6. Step 6: Final answer
   x = 2,491.18