Finding the Fourth Proportional to 1,456.40, 2,188.31 and 1,372.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,456.40 : 2,188.31 = 1,372.38 : x
2. Step 2: Convert to fraction form
   1,456.40/2,188.31 = 1,372.38/x
3. Step 3: Cross multiply
   1,456.40x = 2,188.31 × 1,372.38
4. Step 4: Simplify right side
   1,456.40x = 3,003,192.88
5. Step 5: Solve for x
   x = 3,003,192.88/1,456.40
6. Step 6: Final answer
   x = 2,062.07