Finding the Fourth Proportional to 1,342.72, 2,009.13 and 953.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.72 : 2,009.13 = 953.11 : x
2. Step 2: Convert to fraction form
   1,342.72/2,009.13 = 953.11/x
3. Step 3: Cross multiply
   1,342.72x = 2,009.13 × 953.11
4. Step 4: Simplify right side
   1,342.72x = 1,914,921.89
5. Step 5: Solve for x
   x = 1,914,921.89/1,342.72
6. Step 6: Final answer
   x = 1,426.15