Finding the Fourth Proportional to 1,606.80, 2,217.78 and 943.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,606.80 : 2,217.78 = 943.86 : x
2. Step 2: Convert to fraction form
   1,606.80/2,217.78 = 943.86/x
3. Step 3: Cross multiply
   1,606.80x = 2,217.78 × 943.86
4. Step 4: Simplify right side
   1,606.80x = 2,093,273.83
5. Step 5: Solve for x
   x = 2,093,273.83/1,606.80
6. Step 6: Final answer
   x = 1,302.76