Finding the Fourth Proportional to 1,253.82, 1,730.34 and 722.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,253.82 : 1,730.34 = 722.79 : x
2. Step 2: Convert to fraction form
   1,253.82/1,730.34 = 722.79/x
3. Step 3: Cross multiply
   1,253.82x = 1,730.34 × 722.79
4. Step 4: Simplify right side
   1,253.82x = 1,250,663.25
5. Step 5: Solve for x
   x = 1,250,663.25/1,253.82
6. Step 6: Final answer
   x = 997.48