Finding the Fourth Proportional to 1,433.72, 1,977.88 and 843.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.72 : 1,977.88 = 843.98 : x
2. Step 2: Convert to fraction form
   1,433.72/1,977.88 = 843.98/x
3. Step 3: Cross multiply
   1,433.72x = 1,977.88 × 843.98
4. Step 4: Simplify right side
   1,433.72x = 1,669,291.16
5. Step 5: Solve for x
   x = 1,669,291.16/1,433.72
6. Step 6: Final answer
   x = 1,164.31