Finding the Fourth Proportional to 685,567.86, 1,027,012.59 and 472,298.10

Step by Step Solution

1. Step 1: Write the proportion equation
   685,567.86 : 1,027,012.59 = 472,298.10 : x
2. Step 2: Convert to fraction form
   685,567.86/1,027,012.59 = 472,298.10/x
3. Step 3: Cross multiply
   685,567.86x = 1,027,012.59 × 472,298.10
4. Step 4: Simplify right side
   685,567.86x = 485,056,094,933.08
5. Step 5: Solve for x
   x = 485,056,094,933.08/685,567.86
6. Step 6: Final answer
   x = 707,524.55