Finding the Fourth Proportional to 1,945.91, 2,917.74 and 1,330.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,945.91 : 2,917.74 = 1,330.37 : x
2. Step 2: Convert to fraction form
   1,945.91/2,917.74 = 1,330.37/x
3. Step 3: Cross multiply
   1,945.91x = 2,917.74 × 1,330.37
4. Step 4: Simplify right side
   1,945.91x = 3,881,673.76
5. Step 5: Solve for x
   x = 3,881,673.76/1,945.91
6. Step 6: Final answer
   x = 1,994.79