Finding the Fourth Proportional to 1,770.43, 2,654.42 and 845.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,770.43 : 2,654.42 = 845.34 : x
2. Step 2: Convert to fraction form
   1,770.43/2,654.42 = 845.34/x
3. Step 3: Cross multiply
   1,770.43x = 2,654.42 × 845.34
4. Step 4: Simplify right side
   1,770.43x = 2,243,883.18
5. Step 5: Solve for x
   x = 2,243,883.18/1,770.43
6. Step 6: Final answer
   x = 1,267.42