Finding the Fourth Proportional to 1,182,734.32, 1,632,173.98 and 638,870.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,182,734.32 : 1,632,173.98 = 638,870.09 : x
2. Step 2: Convert to fraction form
   1,182,734.32/1,632,173.98 = 638,870.09/x
3. Step 3: Cross multiply
   1,182,734.32x = 1,632,173.98 × 638,870.09
4. Step 4: Simplify right side
   1,182,734.32x = 1,042,747,143,175.87
5. Step 5: Solve for x
   x = 1,042,747,143,175.87/1,182,734.32
6. Step 6: Final answer
   x = 881,641.06