Finding the Fourth Proportional to 1,302.07, 1,796.86 and 712.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,302.07 : 1,796.86 = 712.61 : x
2. Step 2: Convert to fraction form
   1,302.07/1,796.86 = 712.61/x
3. Step 3: Cross multiply
   1,302.07x = 1,796.86 × 712.61
4. Step 4: Simplify right side
   1,302.07x = 1,280,460.40
5. Step 5: Solve for x
   x = 1,280,460.40/1,302.07
6. Step 6: Final answer
   x = 983.40