Finding the Fourth Proportional to 879,061.34, 1,316,885.87 and 647,830.38

Step by Step Solution

1. Step 1: Write the proportion equation
   879,061.34 : 1,316,885.87 = 647,830.38 : x
2. Step 2: Convert to fraction form
   879,061.34/1,316,885.87 = 647,830.38/x
3. Step 3: Cross multiply
   879,061.34x = 1,316,885.87 × 647,830.38
4. Step 4: Simplify right side
   879,061.34x = 853,118,673,578.73
5. Step 5: Solve for x
   x = 853,118,673,578.73/879,061.34
6. Step 6: Final answer
   x = 970,488.22