Finding the Fourth Proportional to 1,451.78, 2,003.34 and 854.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,451.78 : 2,003.34 = 854.18 : x
2. Step 2: Convert to fraction form
   1,451.78/2,003.34 = 854.18/x
3. Step 3: Cross multiply
   1,451.78x = 2,003.34 × 854.18
4. Step 4: Simplify right side
   1,451.78x = 1,711,204.64
5. Step 5: Solve for x
   x = 1,711,204.64/1,451.78
6. Step 6: Final answer
   x = 1,178.69