Finding the Fourth Proportional to 1,372.50, 2,057.52 and 1,049.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372.50 : 2,057.52 = 1,049.31 : x
2. Step 2: Convert to fraction form
   1,372.50/2,057.52 = 1,049.31/x
3. Step 3: Cross multiply
   1,372.50x = 2,057.52 × 1,049.31
4. Step 4: Simplify right side
   1,372.50x = 2,158,976.31
5. Step 5: Solve for x
   x = 2,158,976.31/1,372.50
6. Step 6: Final answer
   x = 1,573.02