Finding the Fourth Proportional to 1,437.31, 2,157.72 and 951.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,437.31 : 2,157.72 = 951.31 : x
2. Step 2: Convert to fraction form
   1,437.31/2,157.72 = 951.31/x
3. Step 3: Cross multiply
   1,437.31x = 2,157.72 × 951.31
4. Step 4: Simplify right side
   1,437.31x = 2,052,660.61
5. Step 5: Solve for x
   x = 2,052,660.61/1,437.31
6. Step 6: Final answer
   x = 1,428.13