Finding the Fourth Proportional to 2,111.19, 3,166.17 and 630.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.19 : 3,166.17 = 630.35 : x
2. Step 2: Convert to fraction form
   2,111.19/3,166.17 = 630.35/x
3. Step 3: Cross multiply
   2,111.19x = 3,166.17 × 630.35
4. Step 4: Simplify right side
   2,111.19x = 1,995,795.26
5. Step 5: Solve for x
   x = 1,995,795.26/2,111.19
6. Step 6: Final answer
   x = 945.34