Finding the Fourth Proportional to 2,112.59, 3,168.89 and 631.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.59 : 3,168.89 = 631.84 : x
2. Step 2: Convert to fraction form
   2,112.59/3,168.89 = 631.84/x
3. Step 3: Cross multiply
   2,112.59x = 3,168.89 × 631.84
4. Step 4: Simplify right side
   2,112.59x = 2,002,222.57
5. Step 5: Solve for x
   x = 2,002,222.57/2,112.59
6. Step 6: Final answer
   x = 947.76