Finding the Fourth Proportional to 1,543.89, 2,130.50 and 1,046.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,543.89 : 2,130.50 = 1,046.31 : x
2. Step 2: Convert to fraction form
   1,543.89/2,130.50 = 1,046.31/x
3. Step 3: Cross multiply
   1,543.89x = 2,130.50 × 1,046.31
4. Step 4: Simplify right side
   1,543.89x = 2,229,158.22
5. Step 5: Solve for x
   x = 2,229,158.22/1,543.89
6. Step 6: Final answer
   x = 1,443.86