Finding the Fourth Proportional to 1,333.89, 1,996.83 and 916.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,333.89 : 1,996.83 = 916.54 : x
2. Step 2: Convert to fraction form
   1,333.89/1,996.83 = 916.54/x
3. Step 3: Cross multiply
   1,333.89x = 1,996.83 × 916.54
4. Step 4: Simplify right side
   1,333.89x = 1,830,174.57
5. Step 5: Solve for x
   x = 1,830,174.57/1,333.89
6. Step 6: Final answer
   x = 1,372.06