Finding the Fourth Proportional to 1,064.10, 1,595.49 and 414.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,064.10 : 1,595.49 = 414.69 : x
2. Step 2: Convert to fraction form
   1,064.10/1,595.49 = 414.69/x
3. Step 3: Cross multiply
   1,064.10x = 1,595.49 × 414.69
4. Step 4: Simplify right side
   1,064.10x = 661,633.75
5. Step 5: Solve for x
   x = 661,633.75/1,064.10
6. Step 6: Final answer
   x = 621.78