Finding the Fourth Proportional to 1,447.34, 1,996.83 and 916.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447.34 : 1,996.83 = 916.11 : x
2. Step 2: Convert to fraction form
   1,447.34/1,996.83 = 916.11/x
3. Step 3: Cross multiply
   1,447.34x = 1,996.83 × 916.11
4. Step 4: Simplify right side
   1,447.34x = 1,829,315.93
5. Step 5: Solve for x
   x = 1,829,315.93/1,447.34
6. Step 6: Final answer
   x = 1,263.92