Finding the Fourth Proportional to 1,224.69, 1,690.03 and 700.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,224.69 : 1,690.03 = 700.72 : x
2. Step 2: Convert to fraction form
   1,224.69/1,690.03 = 700.72/x
3. Step 3: Cross multiply
   1,224.69x = 1,690.03 × 700.72
4. Step 4: Simplify right side
   1,224.69x = 1,184,237.82
5. Step 5: Solve for x
   x = 1,184,237.82/1,224.69
6. Step 6: Final answer
   x = 966.97