Finding the Fourth Proportional to 1,432.77, 1,977.55 and 843.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,432.77 : 1,977.55 = 843.49 : x
2. Step 2: Convert to fraction form
   1,432.77/1,977.55 = 843.49/x
3. Step 3: Cross multiply
   1,432.77x = 1,977.55 × 843.49
4. Step 4: Simplify right side
   1,432.77x = 1,668,043.65
5. Step 5: Solve for x
   x = 1,668,043.65/1,432.77
6. Step 6: Final answer
   x = 1,164.21