Finding the Fourth Proportional to 1,224.72, 1,690.17 and 700.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,224.72 : 1,690.17 = 700.74 : x
2. Step 2: Convert to fraction form
   1,224.72/1,690.17 = 700.74/x
3. Step 3: Cross multiply
   1,224.72x = 1,690.17 × 700.74
4. Step 4: Simplify right side
   1,224.72x = 1,184,369.73
5. Step 5: Solve for x
   x = 1,184,369.73/1,224.72
6. Step 6: Final answer
   x = 967.05