Finding the Fourth Proportional to 1,168.95, 1,613.15 and 637.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,168.95 : 1,613.15 = 637.83 : x
2. Step 2: Convert to fraction form
   1,168.95/1,613.15 = 637.83/x
3. Step 3: Cross multiply
   1,168.95x = 1,613.15 × 637.83
4. Step 4: Simplify right side
   1,168.95x = 1,028,915.46
5. Step 5: Solve for x
   x = 1,028,915.46/1,168.95
6. Step 6: Final answer
   x = 880.20