Finding the Fourth Proportional to 1,225.28, 1,690.89 and 701.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,225.28 : 1,690.89 = 701.32 : x
2. Step 2: Convert to fraction form
   1,225.28/1,690.89 = 701.32/x
3. Step 3: Cross multiply
   1,225.28x = 1,690.89 × 701.32
4. Step 4: Simplify right side
   1,225.28x = 1,185,846.52
5. Step 5: Solve for x
   x = 1,185,846.52/1,225.28
6. Step 6: Final answer
   x = 967.82