Finding the Fourth Proportional to 1,182,734.63, 1,632,174.42 and 638,870.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,182,734.63 : 1,632,174.42 = 638,870.41 : x
2. Step 2: Convert to fraction form
   1,182,734.63/1,632,174.42 = 638,870.41/x
3. Step 3: Cross multiply
   1,182,734.63x = 1,632,174.42 × 638,870.41
4. Step 4: Simplify right side
   1,182,734.63x = 1,042,747,940,896.91
5. Step 5: Solve for x
   x = 1,042,747,940,896.91/1,182,734.63
6. Step 6: Final answer
   x = 881,641.51