Finding the Fourth Proportional to 1,970.83, 2,719.82 and 1,086.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,970.83 : 2,719.82 = 1,086.61 : x
2. Step 2: Convert to fraction form
   1,970.83/2,719.82 = 1,086.61/x
3. Step 3: Cross multiply
   1,970.83x = 2,719.82 × 1,086.61
4. Step 4: Simplify right side
   1,970.83x = 2,955,383.61
5. Step 5: Solve for x
   x = 2,955,383.61/1,970.83
6. Step 6: Final answer
   x = 1,499.56