Finding the Fourth Proportional to 2,632,761, 3,949,141.50 and 638,217

Step by Step Solution

1. Step 1: Write the proportion equation
   2,632,761 : 3,949,141.50 = 638,217 : x
2. Step 2: Convert to fraction form
   2,632,761/3,949,141.50 = 638,217/x
3. Step 3: Cross multiply
   2,632,761x = 3,949,141.50 × 638,217
4. Step 4: Simplify right side
   2,632,761x = 2,520,409,240,705.50
5. Step 5: Solve for x
   x = 2,520,409,240,705.50/2,632,761
6. Step 6: Final answer
   x = 957,325.50