Finding the Fourth Proportional to 1,431.55, 1,973.46 and 1,182.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,431.55 : 1,973.46 = 1,182.43 : x
2. Step 2: Convert to fraction form
   1,431.55/1,973.46 = 1,182.43/x
3. Step 3: Cross multiply
   1,431.55x = 1,973.46 × 1,182.43
4. Step 4: Simplify right side
   1,431.55x = 2,333,478.31
5. Step 5: Solve for x
   x = 2,333,478.31/1,431.55
6. Step 6: Final answer
   x = 1,630.04