Finding the Fourth Proportional to 1,302.09, 1,796.88 and 712.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,302.09 : 1,796.88 = 712.63 : x
2. Step 2: Convert to fraction form
   1,302.09/1,796.88 = 712.63/x
3. Step 3: Cross multiply
   1,302.09x = 1,796.88 × 712.63
4. Step 4: Simplify right side
   1,302.09x = 1,280,510.59
5. Step 5: Solve for x
   x = 1,280,510.59/1,302.09
6. Step 6: Final answer
   x = 983.43