Finding the Fourth Proportional to 992.35, 1,484.27 and 715.33

Step by Step Solution

1. Step 1: Write the proportion equation
   992.35 : 1,484.27 = 715.33 : x
2. Step 2: Convert to fraction form
   992.35/1,484.27 = 715.33/x
3. Step 3: Cross multiply
   992.35x = 1,484.27 × 715.33
4. Step 4: Simplify right side
   992.35x = 1,061,731.86
5. Step 5: Solve for x
   x = 1,061,731.86/992.35
6. Step 6: Final answer
   x = 1,069.92