Finding the Fourth Proportional to 1,488.88, 2,055.54 and 965.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.88 : 2,055.54 = 965.89 : x
2. Step 2: Convert to fraction form
   1,488.88/2,055.54 = 965.89/x
3. Step 3: Cross multiply
   1,488.88x = 2,055.54 × 965.89
4. Step 4: Simplify right side
   1,488.88x = 1,985,425.53
5. Step 5: Solve for x
   x = 1,985,425.53/1,488.88
6. Step 6: Final answer
   x = 1,333.50