Finding the Fourth Proportional to 1,056.34, 1,456.21 and 740.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,056.34 : 1,456.21 = 740.61 : x
2. Step 2: Convert to fraction form
   1,056.34/1,456.21 = 740.61/x
3. Step 3: Cross multiply
   1,056.34x = 1,456.21 × 740.61
4. Step 4: Simplify right side
   1,056.34x = 1,078,484.61
5. Step 5: Solve for x
   x = 1,078,484.61/1,056.34
6. Step 6: Final answer
   x = 1,020.96