Finding the Fourth Proportional to 1,223.84, 1,689.12 and 700.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,223.84 : 1,689.12 = 700.04 : x
2. Step 2: Convert to fraction form
   1,223.84/1,689.12 = 700.04/x
3. Step 3: Cross multiply
   1,223.84x = 1,689.12 × 700.04
4. Step 4: Simplify right side
   1,223.84x = 1,182,451.56
5. Step 5: Solve for x
   x = 1,182,451.56/1,223.84
6. Step 6: Final answer
   x = 966.18