Finding the Fourth Proportional to 2,092.62, 3,138.72 and 631.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,092.62 : 3,138.72 = 631.98 : x
2. Step 2: Convert to fraction form
   2,092.62/3,138.72 = 631.98/x
3. Step 3: Cross multiply
   2,092.62x = 3,138.72 × 631.98
4. Step 4: Simplify right side
   2,092.62x = 1,983,608.27
5. Step 5: Solve for x
   x = 1,983,608.27/2,092.62
6. Step 6: Final answer
   x = 947.91