Finding the Fourth Proportional to 1,404.72, 2,106.80 and 635.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.72 : 2,106.80 = 635.04 : x
2. Step 2: Convert to fraction form
   1,404.72/2,106.80 = 635.04/x
3. Step 3: Cross multiply
   1,404.72x = 2,106.80 × 635.04
4. Step 4: Simplify right side
   1,404.72x = 1,337,902.27
5. Step 5: Solve for x
   x = 1,337,902.27/1,404.72
6. Step 6: Final answer
   x = 952.43