Finding the Fourth Proportional to 1,056.42, 1,456.98 and 773.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,056.42 : 1,456.98 = 773.19 : x
2. Step 2: Convert to fraction form
   1,056.42/1,456.98 = 773.19/x
3. Step 3: Cross multiply
   1,056.42x = 1,456.98 × 773.19
4. Step 4: Simplify right side
   1,056.42x = 1,126,522.37
5. Step 5: Solve for x
   x = 1,126,522.37/1,056.42
6. Step 6: Final answer
   x = 1,066.36