Finding the Fourth Proportional to 1,945.50, 2,684.79 and 1,247.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,945.50 : 2,684.79 = 1,247.82 : x
2. Step 2: Convert to fraction form
   1,945.50/2,684.79 = 1,247.82/x
3. Step 3: Cross multiply
   1,945.50x = 2,684.79 × 1,247.82
4. Step 4: Simplify right side
   1,945.50x = 3,350,134.66
5. Step 5: Solve for x
   x = 3,350,134.66/1,945.50
6. Step 6: Final answer
   x = 1,721.99