Finding the Fourth Proportional to 1,182,691.89, 1,632,115.46 and 638,827.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,182,691.89 : 1,632,115.46 = 638,827.67 : x
2. Step 2: Convert to fraction form
   1,182,691.89/1,632,115.46 = 638,827.67/x
3. Step 3: Cross multiply
   1,182,691.89x = 1,632,115.46 × 638,827.67
4. Step 4: Simplify right side
   1,182,691.89x = 1,042,640,516,482.78
5. Step 5: Solve for x
   x = 1,042,640,516,482.78/1,182,691.89
6. Step 6: Final answer
   x = 881,582.54