Finding the Fourth Proportional to 1,123,764, 1,685,647.62 and 458,916

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123,764 : 1,685,647.62 = 458,916 : x
2. Step 2: Convert to fraction form
   1,123,764/1,685,647.62 = 458,916/x
3. Step 3: Cross multiply
   1,123,764x = 1,685,647.62 × 458,916
4. Step 4: Simplify right side
   1,123,764x = 773,570,663,179.92
5. Step 5: Solve for x
   x = 773,570,663,179.92/1,123,764
6. Step 6: Final answer
   x = 688,374.66