Finding the Fourth Proportional to 1,806.89, 2,708.69 and 711.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,806.89 : 2,708.69 = 711.00 : x
2. Step 2: Convert to fraction form
   1,806.89/2,708.69 = 711.00/x
3. Step 3: Cross multiply
   1,806.89x = 2,708.69 × 711.00
4. Step 4: Simplify right side
   1,806.89x = 1,925,886.65
5. Step 5: Solve for x
   x = 1,925,886.65/1,806.89
6. Step 6: Final answer
   x = 1,065.85