Finding the Fourth Proportional to 2,104.72, 2,901.94 and 1,917.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,104.72 : 2,901.94 = 1,917.43 : x
2. Step 2: Convert to fraction form
   2,104.72/2,901.94 = 1,917.43/x
3. Step 3: Cross multiply
   2,104.72x = 2,901.94 × 1,917.43
4. Step 4: Simplify right side
   2,104.72x = 5,564,266.81
5. Step 5: Solve for x
   x = 5,564,266.81/2,104.72
6. Step 6: Final answer
   x = 2,643.71