Finding the Fourth Proportional to 2,091.84, 3,136.72 and 630.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091.84 : 3,136.72 = 630.60 : x
2. Step 2: Convert to fraction form
   2,091.84/3,136.72 = 630.60/x
3. Step 3: Cross multiply
   2,091.84x = 3,136.72 × 630.60
4. Step 4: Simplify right side
   2,091.84x = 1,978,015.63
5. Step 5: Solve for x
   x = 1,978,015.63/2,091.84
6. Step 6: Final answer
   x = 945.59