Finding the Fourth Proportional to 1,970.97, 2,719.89 and 1,086.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,970.97 : 2,719.89 = 1,086.76 : x
2. Step 2: Convert to fraction form
   1,970.97/2,719.89 = 1,086.76/x
3. Step 3: Cross multiply
   1,970.97x = 2,719.89 × 1,086.76
4. Step 4: Simplify right side
   1,970.97x = 2,955,854.06
5. Step 5: Solve for x
   x = 2,955,854.06/1,970.97
6. Step 6: Final answer
   x = 1,499.70