Finding the Fourth Proportional to 900,780, 1,243,092.24 and 492,917.52

Step by Step Solution

1. Step 1: Write the proportion equation
   900,780 : 1,243,092.24 = 492,917.52 : x
2. Step 2: Convert to fraction form
   900,780/1,243,092.24 = 492,917.52/x
3. Step 3: Cross multiply
   900,780x = 1,243,092.24 × 492,917.52
4. Step 4: Simplify right side
   900,780x = 612,741,944,072.05
5. Step 5: Solve for x
   x = 612,741,944,072.05/900,780
6. Step 6: Final answer
   x = 680,234.85