Finding the Fourth Proportional to 1,543.27, 2,304.71 and 1,321.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,543.27 : 2,304.71 = 1,321.57 : x
2. Step 2: Convert to fraction form
   1,543.27/2,304.71 = 1,321.57/x
3. Step 3: Cross multiply
   1,543.27x = 2,304.71 × 1,321.57
4. Step 4: Simplify right side
   1,543.27x = 3,045,835.59
5. Step 5: Solve for x
   x = 3,045,835.59/1,543.27
6. Step 6: Final answer
   x = 1,973.62