Finding the Fourth Proportional to 1,342.72, 2,012.46 and 693.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.72 : 2,012.46 = 693.10 : x
2. Step 2: Convert to fraction form
   1,342.72/2,012.46 = 693.10/x
3. Step 3: Cross multiply
   1,342.72x = 2,012.46 × 693.10
4. Step 4: Simplify right side
   1,342.72x = 1,394,836.03
5. Step 5: Solve for x
   x = 1,394,836.03/1,342.72
6. Step 6: Final answer
   x = 1,038.81