Finding the Fourth Proportional to 1,965.71, 2,712.72 and 1,081.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,965.71 : 2,712.72 = 1,081.59 : x
2. Step 2: Convert to fraction form
   1,965.71/2,712.72 = 1,081.59/x
3. Step 3: Cross multiply
   1,965.71x = 2,712.72 × 1,081.59
4. Step 4: Simplify right side
   1,965.71x = 2,934,050.82
5. Step 5: Solve for x
   x = 2,934,050.82/1,965.71
6. Step 6: Final answer
   x = 1,492.62