Finding the Fourth Proportional to 1,224.69, 1,689.80 and 700.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,224.69 : 1,689.80 = 700.71 : x
2. Step 2: Convert to fraction form
   1,224.69/1,689.80 = 700.71/x
3. Step 3: Cross multiply
   1,224.69x = 1,689.80 × 700.71
4. Step 4: Simplify right side
   1,224.69x = 1,184,056.25
5. Step 5: Solve for x
   x = 1,184,056.25/1,224.69
6. Step 6: Final answer
   x = 966.82