Finding the Fourth Proportional to 2,422.56, 3,633.36 and 690.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,422.56 : 3,633.36 = 690.72 : x
2. Step 2: Convert to fraction form
   2,422.56/3,633.36 = 690.72/x
3. Step 3: Cross multiply
   2,422.56x = 3,633.36 × 690.72
4. Step 4: Simplify right side
   2,422.56x = 2,509,634.42
5. Step 5: Solve for x
   x = 2,509,634.42/2,422.56
6. Step 6: Final answer
   x = 1,035.94