Finding the Fourth Proportional to 1,561.34, 2,340.18 and 636.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,561.34 : 2,340.18 = 636.32 : x
2. Step 2: Convert to fraction form
   1,561.34/2,340.18 = 636.32/x
3. Step 3: Cross multiply
   1,561.34x = 2,340.18 × 636.32
4. Step 4: Simplify right side
   1,561.34x = 1,489,103.34
5. Step 5: Solve for x
   x = 1,489,103.34/1,561.34
6. Step 6: Final answer
   x = 953.73