Finding the Fourth Proportional to 2,057.86, 3,085.30 and 961.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057.86 : 3,085.30 = 961.62 : x
2. Step 2: Convert to fraction form
   2,057.86/3,085.30 = 961.62/x
3. Step 3: Cross multiply
   2,057.86x = 3,085.30 × 961.62
4. Step 4: Simplify right side
   2,057.86x = 2,966,886.19
5. Step 5: Solve for x
   x = 2,966,886.19/2,057.86
6. Step 6: Final answer
   x = 1,441.73