Finding the Fourth Proportional to 2,091.51, 3,137.30 and 630.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091.51 : 3,137.30 = 630.68 : x
2. Step 2: Convert to fraction form
   2,091.51/3,137.30 = 630.68/x
3. Step 3: Cross multiply
   2,091.51x = 3,137.30 × 630.68
4. Step 4: Simplify right side
   2,091.51x = 1,978,613.52
5. Step 5: Solve for x
   x = 1,978,613.52/2,091.51
6. Step 6: Final answer
   x = 946.02