Finding the Fourth Proportional to 973.89, 1,342.17 and 724.82

Step by Step Solution

1. Step 1: Write the proportion equation
   973.89 : 1,342.17 = 724.82 : x
2. Step 2: Convert to fraction form
   973.89/1,342.17 = 724.82/x
3. Step 3: Cross multiply
   973.89x = 1,342.17 × 724.82
4. Step 4: Simplify right side
   973.89x = 972,824.95
5. Step 5: Solve for x
   x = 972,824.95/973.89
6. Step 6: Final answer
   x = 998.91