Finding the Fourth Proportional to 2,109.02, 3,162.76 and 627.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.02 : 3,162.76 = 627.80 : x
2. Step 2: Convert to fraction form
   2,109.02/3,162.76 = 627.80/x
3. Step 3: Cross multiply
   2,109.02x = 3,162.76 × 627.80
4. Step 4: Simplify right side
   2,109.02x = 1,985,580.73
5. Step 5: Solve for x
   x = 1,985,580.73/2,109.02
6. Step 6: Final answer
   x = 941.47