Finding the Fourth Proportional to 1,047.25, 1,568.44 and 830.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.25 : 1,568.44 = 830.17 : x
2. Step 2: Convert to fraction form
   1,047.25/1,568.44 = 830.17/x
3. Step 3: Cross multiply
   1,047.25x = 1,568.44 × 830.17
4. Step 4: Simplify right side
   1,047.25x = 1,302,071.83
5. Step 5: Solve for x
   x = 1,302,071.83/1,047.25
6. Step 6: Final answer
   x = 1,243.32