Finding the Fourth Proportional to 1,047.10, 1,570.17 and 722.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.10 : 1,570.17 = 722.62 : x
2. Step 2: Convert to fraction form
   1,047.10/1,570.17 = 722.62/x
3. Step 3: Cross multiply
   1,047.10x = 1,570.17 × 722.62
4. Step 4: Simplify right side
   1,047.10x = 1,134,636.25
5. Step 5: Solve for x
   x = 1,134,636.25/1,047.10
6. Step 6: Final answer
   x = 1,083.60