Finding the Fourth Proportional to 1,289.46, 1,779.46 and 700.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,289.46 : 1,779.46 = 700.00 : x
2. Step 2: Convert to fraction form
   1,289.46/1,779.46 = 700.00/x
3. Step 3: Cross multiply
   1,289.46x = 1,779.46 × 700.00
4. Step 4: Simplify right side
   1,289.46x = 1,245,615.80
5. Step 5: Solve for x
   x = 1,245,615.80/1,289.46
6. Step 6: Final answer
   x = 966.00