Finding the Fourth Proportional to 1,230.82, 1,698.59 and 707.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,230.82 : 1,698.59 = 707.02 : x
2. Step 2: Convert to fraction form
   1,230.82/1,698.59 = 707.02/x
3. Step 3: Cross multiply
   1,230.82x = 1,698.59 × 707.02
4. Step 4: Simplify right side
   1,230.82x = 1,200,937.10
5. Step 5: Solve for x
   x = 1,200,937.10/1,230.82
6. Step 6: Final answer
   x = 975.72