Finding the Fourth Proportional to 2,111.18, 3,166.16 and 630.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.18 : 3,166.16 = 630.34 : x
2. Step 2: Convert to fraction form
   2,111.18/3,166.16 = 630.34/x
3. Step 3: Cross multiply
   2,111.18x = 3,166.16 × 630.34
4. Step 4: Simplify right side
   2,111.18x = 1,995,746.23
5. Step 5: Solve for x
   x = 1,995,746.23/2,111.18
6. Step 6: Final answer
   x = 945.32