Finding the Fourth Proportional to 1,970.43, 2,719.32 and 1,086.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,970.43 : 2,719.32 = 1,086.23 : x
2. Step 2: Convert to fraction form
   1,970.43/2,719.32 = 1,086.23/x
3. Step 3: Cross multiply
   1,970.43x = 2,719.32 × 1,086.23
4. Step 4: Simplify right side
   1,970.43x = 2,953,801.53
5. Step 5: Solve for x
   x = 2,953,801.53/1,970.43
6. Step 6: Final answer
   x = 1,499.06