Finding the Fourth Proportional to 1,224.37, 1,689.15 and 700.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,224.37 : 1,689.15 = 700.12 : x
2. Step 2: Convert to fraction form
   1,224.37/1,689.15 = 700.12/x
3. Step 3: Cross multiply
   1,224.37x = 1,689.15 × 700.12
4. Step 4: Simplify right side
   1,224.37x = 1,182,607.70
5. Step 5: Solve for x
   x = 1,182,607.70/1,224.37
6. Step 6: Final answer
   x = 965.89