Finding the Fourth Proportional to 1,147.25, 1,583.06 and 705.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,147.25 : 1,583.06 = 705.12 : x
2. Step 2: Convert to fraction form
   1,147.25/1,583.06 = 705.12/x
3. Step 3: Cross multiply
   1,147.25x = 1,583.06 × 705.12
4. Step 4: Simplify right side
   1,147.25x = 1,116,243.74
5. Step 5: Solve for x
   x = 1,116,243.74/1,147.25
6. Step 6: Final answer
   x = 972.98