Finding the Fourth Proportional to 1,141.07, 1,575.69 and 722.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,141.07 : 1,575.69 = 722.18 : x
2. Step 2: Convert to fraction form
   1,141.07/1,575.69 = 722.18/x
3. Step 3: Cross multiply
   1,141.07x = 1,575.69 × 722.18
4. Step 4: Simplify right side
   1,141.07x = 1,137,931.80
5. Step 5: Solve for x
   x = 1,137,931.80/1,141.07
6. Step 6: Final answer
   x = 997.25