Finding the Fourth Proportional to 1,231.07, 1,698.71 and 707.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,231.07 : 1,698.71 = 707.00 : x
2. Step 2: Convert to fraction form
   1,231.07/1,698.71 = 707.00/x
3. Step 3: Cross multiply
   1,231.07x = 1,698.71 × 707.00
4. Step 4: Simplify right side
   1,231.07x = 1,200,975.94
5. Step 5: Solve for x
   x = 1,200,975.94/1,231.07
6. Step 6: Final answer
   x = 975.56