Finding the Fourth Proportional to 2,422.32, 3,633.78 and 690.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,422.32 : 3,633.78 = 690.98 : x
2. Step 2: Convert to fraction form
   2,422.32/3,633.78 = 690.98/x
3. Step 3: Cross multiply
   2,422.32x = 3,633.78 × 690.98
4. Step 4: Simplify right side
   2,422.32x = 2,510,869.30
5. Step 5: Solve for x
   x = 2,510,869.30/2,422.32
6. Step 6: Final answer
   x = 1,036.56