Finding the Fourth Proportional to 1,419.52, 2,123.88 and 854.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,419.52 : 2,123.88 = 854.53 : x
2. Step 2: Convert to fraction form
   1,419.52/2,123.88 = 854.53/x
3. Step 3: Cross multiply
   1,419.52x = 2,123.88 × 854.53
4. Step 4: Simplify right side
   1,419.52x = 1,814,919.18
5. Step 5: Solve for x
   x = 1,814,919.18/1,419.52
6. Step 6: Final answer
   x = 1,278.54