Finding the Fourth Proportional to 3,131.29, 4,322.06 and 1,805.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,131.29 : 4,322.06 = 1,805.52 : x
2. Step 2: Convert to fraction form
   3,131.29/4,322.06 = 1,805.52/x
3. Step 3: Cross multiply
   3,131.29x = 4,322.06 × 1,805.52
4. Step 4: Simplify right side
   3,131.29x = 7,803,565.77
5. Step 5: Solve for x
   x = 7,803,565.77/3,131.29
6. Step 6: Final answer
   x = 2,492.12