Finding the Fourth Proportional to 1,970.82, 2,719.73 and 1,086.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,970.82 : 2,719.73 = 1,086.60 : x
2. Step 2: Convert to fraction form
   1,970.82/2,719.73 = 1,086.60/x
3. Step 3: Cross multiply
   1,970.82x = 2,719.73 × 1,086.60
4. Step 4: Simplify right side
   1,970.82x = 2,955,245.02
5. Step 5: Solve for x
   x = 2,955,245.02/1,970.82
6. Step 6: Final answer
   x = 1,499.50