Finding the Fourth Proportional to 1,224.72, 1,689.91 and 700.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,224.72 : 1,689.91 = 700.75 : x
2. Step 2: Convert to fraction form
   1,224.72/1,689.91 = 700.75/x
3. Step 3: Cross multiply
   1,224.72x = 1,689.91 × 700.75
4. Step 4: Simplify right side
   1,224.72x = 1,184,208.73
5. Step 5: Solve for x
   x = 1,184,208.73/1,224.72
6. Step 6: Final answer
   x = 966.92