Finding the Fourth Proportional to 892,730.72, 1,231,977.12 and 490,322.72

Step by Step Solution

1. Step 1: Write the proportion equation
   892,730.72 : 1,231,977.12 = 490,322.72 : x
2. Step 2: Convert to fraction form
   892,730.72/1,231,977.12 = 490,322.72/x
3. Step 3: Cross multiply
   892,730.72x = 1,231,977.12 × 490,322.72
4. Step 4: Simplify right side
   892,730.72x = 604,066,372,456.17
5. Step 5: Solve for x
   x = 604,066,372,456.17/892,730.72
6. Step 6: Final answer
   x = 676,650.15