Finding the Fourth Proportional to 2,666.72, 3,996.54 and 1,417.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,666.72 : 3,996.54 = 1,417.05 : x
2. Step 2: Convert to fraction form
   2,666.72/3,996.54 = 1,417.05/x
3. Step 3: Cross multiply
   2,666.72x = 3,996.54 × 1,417.05
4. Step 4: Simplify right side
   2,666.72x = 5,663,297.01
5. Step 5: Solve for x
   x = 5,663,297.01/2,666.72
6. Step 6: Final answer
   x = 2,123.69