Finding the Fourth Proportional to 2,945.72, 4,417.86 and 893.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,945.72 : 4,417.86 = 893.72 : x
2. Step 2: Convert to fraction form
   2,945.72/4,417.86 = 893.72/x
3. Step 3: Cross multiply
   2,945.72x = 4,417.86 × 893.72
4. Step 4: Simplify right side
   2,945.72x = 3,948,329.84
5. Step 5: Solve for x
   x = 3,948,329.84/2,945.72
6. Step 6: Final answer
   x = 1,340.36