Finding the Fourth Proportional to 1,941.94, 2,678.70 and 1,243.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,941.94 : 2,678.70 = 1,243.72 : x
2. Step 2: Convert to fraction form
   1,941.94/2,678.70 = 1,243.72/x
3. Step 3: Cross multiply
   1,941.94x = 2,678.70 × 1,243.72
4. Step 4: Simplify right side
   1,941.94x = 3,331,552.76
5. Step 5: Solve for x
   x = 3,331,552.76/1,941.94
6. Step 6: Final answer
   x = 1,715.58