Finding the Fourth Proportional to 1,488.66, 2,233.89 and 873.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.66 : 2,233.89 = 873.60 : x
2. Step 2: Convert to fraction form
   1,488.66/2,233.89 = 873.60/x
3. Step 3: Cross multiply
   1,488.66x = 2,233.89 × 873.60
4. Step 4: Simplify right side
   1,488.66x = 1,951,526.30
5. Step 5: Solve for x
   x = 1,951,526.30/1,488.66
6. Step 6: Final answer
   x = 1,310.93