Finding the Fourth Proportional to 1,101.69, 1,520.33 and 635.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.69 : 1,520.33 = 635.94 : x
2. Step 2: Convert to fraction form
   1,101.69/1,520.33 = 635.94/x
3. Step 3: Cross multiply
   1,101.69x = 1,520.33 × 635.94
4. Step 4: Simplify right side
   1,101.69x = 966,834.06
5. Step 5: Solve for x
   x = 966,834.06/1,101.69
6. Step 6: Final answer
   x = 877.59