Finding the Fourth Proportional to 1,302.05, 1,796.74 and 712.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,302.05 : 1,796.74 = 712.57 : x
2. Step 2: Convert to fraction form
   1,302.05/1,796.74 = 712.57/x
3. Step 3: Cross multiply
   1,302.05x = 1,796.74 × 712.57
4. Step 4: Simplify right side
   1,302.05x = 1,280,303.02
5. Step 5: Solve for x
   x = 1,280,303.02/1,302.05
6. Step 6: Final answer
   x = 983.30