Finding the Fourth Proportional to 1,432.76, 2,147.80 and 1,080.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,432.76 : 2,147.80 = 1,080.83 : x
2. Step 2: Convert to fraction form
   1,432.76/2,147.80 = 1,080.83/x
3. Step 3: Cross multiply
   1,432.76x = 2,147.80 × 1,080.83
4. Step 4: Simplify right side
   1,432.76x = 2,321,399.29
5. Step 5: Solve for x
   x = 2,321,399.29/1,432.76
6. Step 6: Final answer
   x = 1,620.23