Finding the Fourth Proportional to 1,747.58, 2,411.61 and 961.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,747.58 : 2,411.61 = 961.61 : x
2. Step 2: Convert to fraction form
   1,747.58/2,411.61 = 961.61/x
3. Step 3: Cross multiply
   1,747.58x = 2,411.61 × 961.61
4. Step 4: Simplify right side
   1,747.58x = 2,319,028.29
5. Step 5: Solve for x
   x = 2,319,028.29/1,747.58
6. Step 6: Final answer
   x = 1,326.99