Finding the Fourth Proportional to 1,432.32, 1,976.70 and 843.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,432.32 : 1,976.70 = 843.31 : x
2. Step 2: Convert to fraction form
   1,432.32/1,976.70 = 843.31/x
3. Step 3: Cross multiply
   1,432.32x = 1,976.70 × 843.31
4. Step 4: Simplify right side
   1,432.32x = 1,666,970.88
5. Step 5: Solve for x
   x = 1,666,970.88/1,432.32
6. Step 6: Final answer
   x = 1,163.83