Finding the Fourth Proportional to 874,046.72, 1,206,092.16 and 492,066.56

Step by Step Solution

1. Step 1: Write the proportion equation
   874,046.72 : 1,206,092.16 = 492,066.56 : x
2. Step 2: Convert to fraction form
   874,046.72/1,206,092.16 = 492,066.56/x
3. Step 3: Cross multiply
   874,046.72x = 1,206,092.16 × 492,066.56
4. Step 4: Simplify right side
   874,046.72x = 593,477,620,214.17
5. Step 5: Solve for x
   x = 593,477,620,214.17/874,046.72
6. Step 6: Final answer
   x = 678,999.88