Finding the Fourth Proportional to 1,484.78, 2,223.32 and 996.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,484.78 : 2,223.32 = 996.35 : x
2. Step 2: Convert to fraction form
   1,484.78/2,223.32 = 996.35/x
3. Step 3: Cross multiply
   1,484.78x = 2,223.32 × 996.35
4. Step 4: Simplify right side
   1,484.78x = 2,215,188.78
5. Step 5: Solve for x
   x = 2,215,188.78/1,484.78
6. Step 6: Final answer
   x = 1,491.94