Finding the Fourth Proportional to 705,078.72, 1,057,613.76 and 255,695.04

Step by Step Solution

1. Step 1: Write the proportion equation
   705,078.72 : 1,057,613.76 = 255,695.04 : x
2. Step 2: Convert to fraction form
   705,078.72/1,057,613.76 = 255,695.04/x
3. Step 3: Cross multiply
   705,078.72x = 1,057,613.76 × 255,695.04
4. Step 4: Simplify right side
   705,078.72x = 270,426,592,667.75
5. Step 5: Solve for x
   x = 270,426,592,667.75/705,078.72
6. Step 6: Final answer
   x = 383,540.99