Finding the Fourth Proportional to 1,168.52, 1,612.73 and 770.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,168.52 : 1,612.73 = 770.12 : x
2. Step 2: Convert to fraction form
   1,168.52/1,612.73 = 770.12/x
3. Step 3: Cross multiply
   1,168.52x = 1,612.73 × 770.12
4. Step 4: Simplify right side
   1,168.52x = 1,241,995.63
5. Step 5: Solve for x
   x = 1,241,995.63/1,168.52
6. Step 6: Final answer
   x = 1,062.88