Finding the Fourth Proportional to 1,103.67, 1,523.03 and 637.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.67 : 1,523.03 = 637.83 : x
2. Step 2: Convert to fraction form
   1,103.67/1,523.03 = 637.83/x
3. Step 3: Cross multiply
   1,103.67x = 1,523.03 × 637.83
4. Step 4: Simplify right side
   1,103.67x = 971,431.04
5. Step 5: Solve for x
   x = 971,431.04/1,103.67
6. Step 6: Final answer
   x = 880.18