Finding the Fourth Proportional to 901,050, 1,243,449 and 498,667.92

Step by Step Solution

1. Step 1: Write the proportion equation
   901,050 : 1,243,449 = 498,667.92 : x
2. Step 2: Convert to fraction form
   901,050/1,243,449 = 498,667.92/x
3. Step 3: Cross multiply
   901,050x = 1,243,449 × 498,667.92
4. Step 4: Simplify right side
   901,050x = 620,068,126,456.08
5. Step 5: Solve for x
   x = 620,068,126,456.08/901,050
6. Step 6: Final answer
   x = 688,161.73