Finding the Fourth Proportional to 2,079.31, 2,869.49 and 1,147.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,079.31 : 2,869.49 = 1,147.81 : x
2. Step 2: Convert to fraction form
   2,079.31/2,869.49 = 1,147.81/x
3. Step 3: Cross multiply
   2,079.31x = 2,869.49 × 1,147.81
4. Step 4: Simplify right side
   2,079.31x = 3,293,629.32
5. Step 5: Solve for x
   x = 3,293,629.32/2,079.31
6. Step 6: Final answer
   x = 1,584.00