Finding the Fourth Proportional to 1,168.94, 1,613.15 and 637.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,168.94 : 1,613.15 = 637.82 : x
2. Step 2: Convert to fraction form
   1,168.94/1,613.15 = 637.82/x
3. Step 3: Cross multiply
   1,168.94x = 1,613.15 × 637.82
4. Step 4: Simplify right side
   1,168.94x = 1,028,899.33
5. Step 5: Solve for x
   x = 1,028,899.33/1,168.94
6. Step 6: Final answer
   x = 880.20