Finding the Fourth Proportional to 1,333.10, 1,996.56 and 1,286.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,333.10 : 1,996.56 = 1,286.96 : x
2. Step 2: Convert to fraction form
   1,333.10/1,996.56 = 1,286.96/x
3. Step 3: Cross multiply
   1,333.10x = 1,996.56 × 1,286.96
4. Step 4: Simplify right side
   1,333.10x = 2,569,492.86
5. Step 5: Solve for x
   x = 2,569,492.86/1,333.10
6. Step 6: Final answer
   x = 1,927.46