Finding the Fourth Proportional to 1,944.57, 2,917.76 and 971.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,944.57 : 2,917.76 = 971.31 : x
2. Step 2: Convert to fraction form
   1,944.57/2,917.76 = 971.31/x
3. Step 3: Cross multiply
   1,944.57x = 2,917.76 × 971.31
4. Step 4: Simplify right side
   1,944.57x = 2,834,049.47
5. Step 5: Solve for x
   x = 2,834,049.47/1,944.57
6. Step 6: Final answer
   x = 1,457.42