Finding the Fourth Proportional to 1,356.48, 1,871.52 and 942.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.48 : 1,871.52 = 942.72 : x
2. Step 2: Convert to fraction form
   1,356.48/1,871.52 = 942.72/x
3. Step 3: Cross multiply
   1,356.48x = 1,871.52 × 942.72
4. Step 4: Simplify right side
   1,356.48x = 1,764,319.33
5. Step 5: Solve for x
   x = 1,764,319.33/1,356.48
6. Step 6: Final answer
   x = 1,300.66