Finding the Fourth Proportional to 1,210.04, 1,669.59 and 712.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,210.04 : 1,669.59 = 712.73 : x
2. Step 2: Convert to fraction form
   1,210.04/1,669.59 = 712.73/x
3. Step 3: Cross multiply
   1,210.04x = 1,669.59 × 712.73
4. Step 4: Simplify right side
   1,210.04x = 1,189,958.53
5. Step 5: Solve for x
   x = 1,189,958.53/1,210.04
6. Step 6: Final answer
   x = 983.41