Finding the Fourth Proportional to 2,035.23, 2,808.56 and 1,139.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,035.23 : 2,808.56 = 1,139.00 : x
2. Step 2: Convert to fraction form
   2,035.23/2,808.56 = 1,139.00/x
3. Step 3: Cross multiply
   2,035.23x = 2,808.56 × 1,139.00
4. Step 4: Simplify right side
   2,035.23x = 3,198,930.10
5. Step 5: Solve for x
   x = 3,198,930.10/2,035.23
6. Step 6: Final answer
   x = 1,571.78