Finding the Fourth Proportional to 2,116.72, 3,174.46 and 635.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116.72 : 3,174.46 = 635.88 : x
2. Step 2: Convert to fraction form
   2,116.72/3,174.46 = 635.88/x
3. Step 3: Cross multiply
   2,116.72x = 3,174.46 × 635.88
4. Step 4: Simplify right side
   2,116.72x = 2,018,575.62
5. Step 5: Solve for x
   x = 2,018,575.62/2,116.72
6. Step 6: Final answer
   x = 953.63