Finding the Fourth Proportional to 1,660.89, 2,291.88 and 962.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,660.89 : 2,291.88 = 962.31 : x
2. Step 2: Convert to fraction form
   1,660.89/2,291.88 = 962.31/x
3. Step 3: Cross multiply
   1,660.89x = 2,291.88 × 962.31
4. Step 4: Simplify right side
   1,660.89x = 2,205,499.04
5. Step 5: Solve for x
   x = 2,205,499.04/1,660.89
6. Step 6: Final answer
   x = 1,327.90