Finding the Fourth Proportional to 1,433.48, 1,978.46 and 836.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.48 : 1,978.46 = 836.06 : x
2. Step 2: Convert to fraction form
   1,433.48/1,978.46 = 836.06/x
3. Step 3: Cross multiply
   1,433.48x = 1,978.46 × 836.06
4. Step 4: Simplify right side
   1,433.48x = 1,654,107.09
5. Step 5: Solve for x
   x = 1,654,107.09/1,433.48
6. Step 6: Final answer
   x = 1,153.91