Finding the Fourth Proportional to 1,656.50, 2,285.61 and 957.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,656.50 : 2,285.61 = 957.86 : x
2. Step 2: Convert to fraction form
   1,656.50/2,285.61 = 957.86/x
3. Step 3: Cross multiply
   1,656.50x = 2,285.61 × 957.86
4. Step 4: Simplify right side
   1,656.50x = 2,189,294.39
5. Step 5: Solve for x
   x = 2,189,294.39/1,656.50
6. Step 6: Final answer
   x = 1,321.64